Find software
A directory of software to build websites and web apps.
596 with momentum out of 2,200 listed. Not counted: 180 defunct, 465 stubs.
Categories24 values, all of them on one page
0–9
- @easyops-cn/docusaurus-search-local
Offline search theme for Docusaurus v2 and v3 that indexes the docs and blog locally, with no external search service.
- @wordpress/env
Command-line tool that sets up a local WordPress environment for building and testing plugins and themes, Docker-based by default, published from the Gutenberg monorepo.
A
- Ace
Embeddable code editor written in JavaScript for web pages and JavaScript applications.
Aceternity UILibrary of animated React and Tailwind CSS components, blocks and templates that users copy into their own projects.
- acme.sh
ACME protocol client written in POSIX shell that issues, installs and renews TLS certificates from ACME certificate authorities.
- Acquia Drupal Starter Kit
Drupal distribution of modules and configuration for building low-code websites on the Acquia platform.
- Active Record
Object-relational mapping library for Ruby that maps classes to database tables, distributed as part of Rails.
ActivepiecesWorkflow automation platform with a self-hostable server and an embeddable builder that a SaaS product can place inside its own app.
Actix WebRust web framework for building HTTP servers and web applications, with routing, middleware, WebSocket support and an async runtime.
AdminerWeb-based database management tool distributed as a single PHP file.
AdminNeoDatabase management tool written in PHP that is distributed as a single file and built on Adminer.
AdonisJSTypeScript-first Node.js web framework for web apps and API servers, with ORM, validation, mail and queues in the core distribution.
AG GridJavaScript data grid library, in a Community edition under the MIT license and an Enterprise edition under a commercial license, for displaying and editing tabular data.
- aiohttp
Asynchronous HTTP client and server library for Python, built on asyncio, with a web server and a client session API.
AjvJSON Schema and JSON Type Definition validator for Node.js and browsers that compiles schemas into validation functions.
- Alinea
Git-based headless CMS for Next.js that stores every entry as a JSON file in the project repository.
Alpine.jsJavaScript framework that adds reactive behavior to HTML through attributes written in the markup.
ALTCHAOpen-source proof-of-work CAPTCHA widget and server verification libraries, with a paid self-hosted server (Sentinel) and a hosted service (Cloud).
- amCharts 5
JavaScript library for interactive charts, maps and stock charts in web pages and web apps.
Ametys CMSJava content management system for websites, intranets and portals, published under the Apache License.
AnalogFull-stack meta-framework for building Angular applications and websites, with Vite builds and Nitro server integrations.
AngularTypeScript-based web application framework with client-side, server-side and prerendered rendering.
Angular MaterialMaterial Design UI components for Angular applications, built by the Angular team.
Angular PrimitivesHeadless, accessible UI primitives for Angular that ship without styles.
Anime.jsJavaScript animation library that animates CSS properties, SVG, DOM attributes and JavaScript objects.
Ant DesignEnterprise-class UI design language and React component library.
Ant Design MobileUI component library of essential UI blocks for building mobile web apps.
- Apache APISIX
Open-source API gateway for routing, securing and managing traffic to APIs, microservices and LLM providers, built on NGINX and etcd.
Apache EChartsJavaScript library for interactive charts and data visualization that runs in the browser.
- Apache HTTP Server
Open-source web server for modern operating systems, extended by loadable modules.
Apache OFBizJava suite of enterprise business applications for ERP, CRM and e-commerce, built on an entity engine, a service engine and a widget-based UI.
Apache ShenYuJava-native API gateway for HTTP, Dubbo, gRPC and WebSocket services, with plugins for authentication, traffic control and observability.
- Apache SkyWalking
Application performance monitoring system for distributed systems, microservices and container-based architectures.
- Apache Struts
Apache Struts is an open-source MVC framework for building Java web applications.
- Apache Tomcat
Java servlet and JSP container, an open source implementation of the Jakarta Servlet, Pages, Expression Language, WebSocket, Annotations and Authentication specifications.
- Apache Wicket
Component-based Java web framework that keeps behavior in Java classes and markup in plain HTML.
ApexChartsJavaScript charting library that draws interactive charts with SVG for websites and web apps.
Apollo ClientGraphQL client library for JavaScript that fetches, caches and modifies remote and local application data.
Apollo ServerOpen-source GraphQL server for Node.js that runs as an add-on to new or existing Node.js apps, including Express, Fastify and AWS Lambda.
AppsmithOpen source low-code platform for building internal tools, admin panels and dashboards.
AppwriteOpen-source backend platform with authentication, databases, storage, functions and messaging, available as Appwrite Cloud or self-hosted with Docker.
ArangoDBMulti-model database for documents, graphs and key-value data, queried with the AQL query language.
Arco DesignReact UI components library based on the Arco Design system.
- Arco Design Vue
Vue UI component library, based on the Arco Design system, distributed as an npm package.
AriakitOpen-source React library of unstyled, accessible UI primitives and components for building web apps and design systems.
- asdf
Command-line version manager for language runtimes and developer tools, configured per project in a .tool-versions file.
ASP.NET CoreCross-platform, open-source framework for building web apps and services with .NET and C#.
assistant-uiOpen-source TypeScript and React library of components for building AI chat interfaces.
AstroWeb framework for content-driven websites that prerenders pages to static HTML and can render routes on demand.
AstryxOpen source React design system built on StyleX, with themes and a command-line tool.
- Atomic Server
Self-hostable server for storage, search, sharing and sync of Atomic Data, with a web app and a RESTful API.
AtomicoMicro-library for building web components with functions and hooks.
- Auth.js
Authentication library for JavaScript web frameworks, with OAuth and OpenID Connect providers, email sign-in and credentials.
AutheliaOpen-source authentication and authorization server and portal that adds multi-factor authentication and single sign-on in front of web applications.
authentikSelf-hosted, open source identity provider with OIDC, SAML, LDAP and proxy authentication.
- AutoAnimate
Zero-config, drop-in animation utility that adds transitions to a web app when elements are added, removed or moved.
AutomergeLibrary of data structures for building collaborative applications, with a JavaScript package and a Rust core.
AutoprefixerPostCSS plugin that parses CSS and adds vendor prefixes to rules, using browser support data from Can I Use.
- AVA
Test runner for Node.js with a concise API, detailed error output and concurrent test runs.
- Awesomplete
Ultra lightweight autocomplete widget for input fields, with zero dependencies.
- axe-core
JavaScript accessibility testing engine that checks websites and other HTML-based user interfaces inside automated tests.
AxiosPromise-based HTTP client for the browser and Node.js.
- Axum
Rust HTTP routing and request-handling library focused on ergonomics and modularity.
B
- Babel
JavaScript compiler that rewrites next-generation JavaScript into code that runs in the browsers and runtimes a project targets.
- Babylon.js
Open-source JavaScript and TypeScript 3D rendering engine for the web.
- BackstopJS
Visual regression testing tool that captures screenshots of a web app over time and compares them against approved references.
- Bagatto
Static site generator in which each site is a Janet program that declares its data and its output files.
Base UIUnstyled React component library for building accessible user interfaces.
BasecoatComponent library built with Tailwind CSS that works with any web stack.
baserCMSOpen-source PHP content management system built on CakePHP for building and customizing websites, with a REST API.
- Beasties
Build plugin that inlines a page's critical CSS and lazy-loads the rest of its stylesheets.
Better AuthFramework-agnostic authentication and authorization framework for TypeScript.
BiomeToolchain for web projects with a formatter and a linter, usable from the command line and through a language server.
- Bits UI
Headless, unstyled Svelte component primitives for building accessible component libraries.
- Blazor
Web UI framework for building interactive web apps with C# and Razor components, shipped as part of ASP.NET Core.
BlockNoteBlock-based rich text editor for React applications.
BokehPython library for interactive plots and data applications that render in web browsers.
BootstrapHTML, CSS and JavaScript toolkit for developing responsive, mobile-first projects on the web.
BootstrapVueNextVue 3 component library that implements Bootstrap 5 components with TypeScript types and WAI-ARIA markup.
- Browserify
Bundler that lets browser code use Node.js-style require() calls to load npm modules into a single script.
- BSSG
Static site generator written in Bash that builds a website from Markdown posts and pages.
BugSnagError monitoring and performance monitoring service for mobile, web, desktop and server applications, offered as a hosted platform and as an on-premises installation.
- Bull Board
Dashboard UI for Bull and BullMQ job queues, mounted into an existing Node server or run as a standalone CLI or Docker image.
BunFast all-in-one JavaScript and TypeScript runtime that also ships a package manager, test runner and bundler as one executable.
C
c15tOpen-source consent manager that renders cookie banners, a preferences dialog and consent-gated scripts for JavaScript frameworks.
- Camaleon CMS
Content management system for Ruby on Rails, distributed as a gem and run inside a Rails application.
CapRoverSelf-hosted platform as a service that deploys apps and one-click services to Docker containers behind nginx with automatic HTTPS.
CarbonPHP library that extends DateTime with an API for creating, changing and formatting dates.
- Carbon Components Svelte
Svelte component library implementing IBM's open source Carbon Design System.
- Carbone
Document generator that fills Word, Excel, OpenDocument and PowerPoint templates with JSON data and exports PDF and other formats.
CasdoorOpen-source identity and access management and single sign-on platform with a web admin console.
- Cash
Small jQuery-style library for DOM manipulation in modern browsers.
CASLJavaScript authorization library that defines what a given user may access, for browsers and Node.js.
CephOpen-source distributed storage system that serves object, block and file interfaces from one cluster built on commodity hardware.
cert-managerKubernetes controller that issues and renews X.509 TLS certificates for workloads in a Kubernetes or OpenShift cluster.
- Chai
Assertion library for Node.js and the browser that pairs with any JavaScript test framework.
Chart.jsJavaScript charting library that draws charts on an HTML5 canvas.
ChartistJavaScript library that draws responsive charts as SVG, styled with CSS.
- Choices.js
Vanilla JavaScript select box and text input plugin with configurable options and no jQuery dependency.
- class-validator
Validation library for TypeScript and JavaScript classes that checks object properties against rules declared with decorators.
ClickHouseColumn-oriented SQL database management system for analytical queries, available as open-source server software and as a cloud service.
CloudscapeOpen source design system of guidelines, React components and design resources for building web applications.
CockroachDBDistributed SQL database that runs as a cluster of nodes and keeps its data replicated across them.
CodeceptJSEnd-to-end testing framework that writes tests as user actions and runs them through Playwright, WebDriver, Puppeteer or Appium.
CodeIgniterPHP MVC web framework with a small footprint and few configuration requirements.
ComentarioSelf-hosted web comment engine that adds threaded comments, voting and moderation to web pages through an embedded widget.
CompanionOpen source Node.js server that handles OAuth and streams files from remote sources such as Google Drive and Dropbox into uploads made with Uppy.
- Compiled
Compile-time CSS-in-JS library for React that writes its styles out as atomic CSS.
Concrete CMSOpen-source content management system for teams, written in PHP, with a built-in REST API and a MySQL or MariaDB database.
- Conform
Type-safe form validation library that progressively enhances HTML forms, with React bindings and support for Remix and Next.js.
Connect for ECMAScriptTypeScript implementation of Connect, a family of libraries for building type-safe APIs from Protocol Buffers schemas.
ContemberOpen-source platform for building data-driven web applications, with a GraphQL API, PostgreSQL and a React administration interface.
Control Web PanelLinux control panel for managing web hosting, websites and servers on dedicated servers and VPS, with a free core and a paid CWPpro edition.
ConvexOpen-source reactive database and backend for web apps, with server functions written in TypeScript and a cloud platform run by the maker.
- CookieConsent
Vanilla JavaScript consent management library that shows a cookie banner and blocks scripts until visitors consent.
CoolifyOpen-source, self-hostable platform that deploys applications, databases and services to Docker containers on the user's own servers.
CoreMedia Content CloudProprietary enterprise content management system and digital experience platform, offered as a hybrid headless CMS.
Countly LiteSelf-hosted analytics and engagement server that collects data from web, mobile and desktop applications and shows it in dashboards.
cPanelProprietary web hosting control panel and server management software, sold as cPanel & WHM licenses for servers that host websites.
Cropper.jsJavaScript image cropper, built as a series of web components.
CS-CartCommercial eCommerce software for building online stores and multi-vendor marketplaces, run on the customer's own server.
cssnanoModular CSS minifier, built on the PostCSS ecosystem, that compresses stylesheets with a set of optimizations and presets.
CubicWebPython web framework for data-centric applications built on an explicit schema, with a query language and components called cubes.
cvaA TypeScript library for building type-safe, variant-driven class names with Tailwind CSS or any other styling approach.
CypressEnd-to-end and component testing framework that runs tests in a real browser.
D
D3JavaScript library for bespoke data visualization that runs in the browser.
daisyUIComponent library for Tailwind CSS that adds named component classes and themes.
date-fnsJavaScript library of functions for manipulating dates in browsers and on Node.js.
Day.jsJavaScript library that parses, validates, manipulates and displays dates and times, with a largely Moment.js-compatible API.
- DBeaver
Desktop database management tool and SQL client for many SQL and NoSQL databases, with a free community edition.
Decap CMSGit-based content management interface, delivered as a single-page admin app, that edits the content files of a static site.
- Devise
Authentication solution for Rails based on Warden, with modules for sign-in, registration, confirmation, password recovery and account locking.
Dexie.jsWrapper library for IndexedDB, the standard database in the browser, for offline-first web applications.
dhtmlxGanttJavaScript Gantt chart component for project scheduling, timelines and task dependencies.
- Diesel
Safe, extensible ORM and query builder for Rust.
DioxusRust framework for building fullstack web, desktop and mobile apps from one codebase.
- DirectAdmin
Proprietary web hosting control panel for managing websites, email, DNS and databases on Linux servers, with a paid license per server.
DjangoPython web framework with an ORM, URL routing, templating, forms and an automatic admin interface.
- Django REST framework
Toolkit for building Web APIs on Django, with serialization, views, authentication and permissions.
django-allauthIntegrated set of Django applications for local and social account authentication, registration and account management.
- dnd kit
Drag and drop toolkit for the web, with a framework-agnostic core and adapters for React, Vue, Svelte and Solid.
Docker DesktopDesktop application that installs the Docker Engine, Docker CLI and Docker Compose on macOS, Windows and Linux for building and running containers.
- DocSearch
Free search program from Algolia that crawls documentation into an Algolia index and provides a search box for it through open source frontend packages.
Doctrine DBALPHP database abstraction layer with an object-oriented API for queries and for schema introspection and management.
Doctrine ORMPHP object-relational mapper that provides transparent persistence for PHP objects.
DocusaurusReact-based static site generator for documentation websites and blogs written in Markdown and MDX.
DokkuSelf-hosted platform as a service that runs on a single Linux server and deploys web apps pushed to it with git.
- Dompdf
PHP library that converts HTML and CSS to PDF documents.
- DOMPurify
DOM-based XSS sanitizer that cleans HTML, MathML and SVG markup in the browser or on Node.js.
DotclearOpen-source PHP engine for publishing blogs, with several blogs and users in one installation.
- dotCMS
Java content management system with an admin console, REST and GraphQL APIs and multi-site management, distributed as a Docker image and as a managed cloud service.
dotLottie WebJavaScript and TypeScript player for Lottie and dotLottie animations, built on a Rust and WebAssembly core.
Driver.jsJavaScript library for product tours, element highlights and feature hints on web pages.
Drizzle ORMTypeScript ORM that maps SQL databases to typed schemas and queries, with a companion migration tool, Drizzle Kit.
Drupal CommerceE-commerce module suite that adds online store features to Drupal sites.
DuckDBAnalytical SQL database that runs in-process inside Python, Node.js and other applications, with a WebAssembly build for browsers.
E
e107Open-source PHP content management system for websites, blogs and intranets, with a plugin and theme system.
- Easy CMS
Embedded headless CMS that runs inside a Nuxt or Next.js app, with a typed local API, a REST API and an admin at /admin.
- EasyMDE
Drop-in JavaScript Markdown editor that replaces a textarea, with a toolbar, live rendering of Markdown syntax and autosave.
EasypanelSelf-hosted server management panel that deploys apps, databases and templated services on servers the user runs, using Docker.
EchoGo web framework built on the standard net/http package, with a radix-tree router, request binding, middleware and centralized error handling.
- Eclipse Mojarra
Eclipse's implementation of the Jakarta Faces specification for building Java web user interfaces.
EdgeTemplate engine for Node.js that renders markup from templates with JavaScript expressions, components and partials.
EJSTemplating language that generates HTML from plain JavaScript written inside templates, for Node.js and the browser.
Element PlusUI component library for Vue 3, written in TypeScript.
EleventyStatic site generator that transforms a directory of templates in various languages into HTML.
ElysiaTypeScript web framework for building backend servers, optimized for Bun and also runnable on Node.js.
Embla CarouselJavaScript carousel library with fluid motion, swipe gestures and a plugin system, usable with React, Vue, Svelte, Solid or plain JavaScript.
- EmDash
Full-stack TypeScript CMS built on Astro, with an admin panel, a REST API and a plugin system, that runs on Cloudflare or a Node.js server.
EmotionCSS-in-JS library for writing styles with JavaScript, with packages for React and for other frameworks.
EncoreBackend framework for TypeScript and Go in which application code declares the infrastructure it uses, such as databases, Pub/Sub and cron jobs.
- Endroid QR Code
PHP library that generates QR codes as PNG, WebP, SVG, EPS or binary output.
EnhanceHosting control panel for running websites, email, databases and backups across one or more Linux servers in a single cluster.
EnvoyOpen source edge and service proxy for cloud-native applications.
esbuildJavaScript and TypeScript bundler and minifier, shipped as a native binary with a JavaScript API.
ESLintPluggable linter for JavaScript that reports and fixes problems in source code through configurable rules and plugins.
EtaEmbedded JavaScript template engine written in TypeScript that renders templates in Node, Deno and the browser.
EverShopOpen-source TypeScript e-commerce platform built on Node.js and PostgreSQL, with a GraphQL API and React storefront and admin.
- Exceptionless
Error and log reporting service with a self-hostable server, a web dashboard and client libraries for .NET and JavaScript.
Expo RouterFile-based router for universal React Native apps that run on Android, iOS and the web, part of the open-source Expo platform.
ExpressMinimalist web framework for Node.js for building web applications and APIs.
ExpressoTSTypeScript framework for building server-side Node.js applications, with dependency injection and an Express adapter.
F
Fabric.jsJavaScript HTML5 canvas library for interactive objects, with SVG and JSON import and export.
- Faircamp
Static site generator that builds a website from a folder of audio files, for audio producers.
FakerJavaScript library that generates fake but realistic data for testing and development, in the browser and in Node.js.
FakerPHP library that generates fake data for tests, database seeding and anonymized datasets.
- fast-check
Property-based testing framework for JavaScript and TypeScript that generates inputs to check properties of code.
FastAPIPython web framework for building APIs from standard Python type hints, served by an ASGI server.
- fastest-validator
JavaScript validation library that compiles an object schema into a checker function for Node.js, browsers and Deno.
FastifyNode.js web framework for building HTTP APIs and web applications, with a plugin architecture and schema-based validation.
FASTPANELServer control panel for creating and managing websites, email accounts, databases, SSL certificates and backups on a Linux server.
- favicons
Node.js module that generates favicons and their associated icon and web app manifest files from a source image.
FessJava enterprise search server with a built-in crawler, an admin console and a search UI, built on OpenSearch.
FiberExpress-inspired web framework for Go, built on Fasthttp.
- Filament
UI framework for Laravel for building admin panels and apps from Livewire-based tables, forms and other components.
FilePondJavaScript file upload library that turns file inputs into a drop area with previews, validation, image processing and uploads.
FlagsmithOpen-source feature flag and remote config platform, available self-hosted or as a cloud service, with SDKs for web, mobile and server-side apps.
- FlexSearch
Full-text search library for browsers and Node.js that keeps its index in memory or in a database.
Floating UIJavaScript library that positions floating elements such as tooltips, popovers and dropdowns next to their anchors, with React and Vue bindings.
- Fluent UI System Icons
Icon set of familiar icons from Microsoft, shipped as SVG files and as native Android, iOS and Flutter libraries.
Fluent.jsJavaScript implementation of Project Fluent, a localization framework for translations with plurals, genders and grammatical cases.
FlyEnvNative local development environment for Windows, macOS and Linux that runs runtimes, databases and web servers on the host, with local sites, HTTPS and an MCP server for AI coding agents.
Font AwesomeIcon library and toolkit distributed as web fonts, SVG and CSS, with free icon styles and paid Pro styles.
FormatJSA set of JavaScript libraries for internationalization built on ICU MessageFormat and the ECMA-402 Intl APIs.
FormbricksOpen-source experience management and survey platform, self-hosted or offered as a hosted cloud service.
FormikAn open source form library for React and React Native that holds form values, validation and submission state.
Framework7Open-source framework for building mobile, desktop and web apps with native-looking UI components.
Frappe FrameworkPython and JavaScript low-code web framework for building data-driven web applications, with a built-in admin interface, roles and permissions.
- Frappe Gantt
JavaScript library that draws configurable, interactive Gantt charts for the web.
Froala EditorCommercial JavaScript WYSIWYG HTML editor with a set of plugins, framework integrations and server SDKs.
- frp
Reverse proxy that exposes services behind a NAT or firewall to the internet through a server with a public IP address, written in Go.
FumadocsReact documentation framework that composes into an existing React framework to build docs sites.
Fuse.jsLightweight fuzzy-search library written in TypeScript, with no dependencies, for searching in browsers and on servers.
- fuzzysort
JavaScript library that fuzzy-matches search text against strings and object properties, with scores and highlighting.
G
GarageS3-compatible object storage server for self-hosted, geo-distributed deployments, written in Rust.
GinGo web framework with a Martini-like API for building web services, REST APIs and web applications.
- GLightbox
Pure JavaScript lightbox that shows images, videos, iframes and inline content.
GlitchTipOpen-source error tracking platform that works with Sentry client SDKs, self-hosted or hosted by GlitchTip.
go-zeroGo web and RPC framework with code generation from API definitions, built-in resilience components and the goctl command-line tool.
GoJSJavaScript and TypeScript library for creating interactive diagrams, charts and graphs in the browser or on Node.js.
- goober
CSS-in-JS library whose styled API is inspired by emotion.
- Gophenberg
Plugin-first CMS with a Go backend, a React admin built on the Gutenberg block editor and optional Astro themes, backed by PostgreSQL.
GORMGo ORM library that maps structs to database tables, with associations, hooks, transactions and auto migrations.
GoshtosoGo UI component library of templ components for server-rendered web applications.
- Got
Human-friendly HTTP request library for Node.js with promise and stream APIs, retries, timeouts and RFC 7234 caching.
GradioPython package for building web interfaces and demos for machine learning models and Python functions.
- Grafana
Open source application for querying, visualizing, alerting on and exploring metrics, logs and traces.
- Grafana Loki
Horizontally scalable log aggregation system that indexes log labels rather than the text of log lines.
GrandNodeOpen-source e-commerce platform built on ASP.NET Core and MongoDB, with multi-store and multi-vendor support.
GrapesJSOpen-source web builder framework that adds a visual editor for HTML templates to an application.
- GraphQL Code Generator
Plugin-based command-line tool that generates typed code from a GraphQL schema and its operations.
- GraphQL Mesh
Framework for composing REST, OpenAPI, gRPC, SOAP, database and GraphQL sources into a GraphQL federation supergraph.
- GraphQL Tools
A collection of npm packages for building, mocking and stitching GraphQL schemas and resolvers in JavaScript.
- GraphQL Yoga
Fully-featured GraphQL server library for JavaScript that runs on the WHATWG Fetch API across Node.js and other JavaScript runtimes.
- graphql-ws
Zero-dependency GraphQL over WebSocket server and client library for JavaScript, with adapters for common WebSocket servers.
- GraphQL.js
JavaScript implementation of the GraphQL specification, providing the parser, validator, executor and type system used to build GraphQL servers, clients and tools.
GravFlat-file PHP content management system that stores pages as Markdown and YAML files without a database.
Grid.jsFree and open-source JavaScript table plugin that works with React, Angular, Vue and plain JavaScript.
- Griffel
CSS-in-JS library that defines styles as JavaScript objects and can compile them ahead of time.
GrowthBookOpen-core feature flagging, experimentation and product analytics platform, available self-hosted or as a cloud service, with SDKs for application code.
GSAPJavaScript animation library, with plugins for scroll, SVG, text and UI animation, that runs in the browser.
gulpJavaScript toolkit that automates build and workflow tasks by composing single-purpose tasks and plugins into streaming pipelines defined in a gulpfile.
- Guzzle
PHP HTTP client library for sending HTTP requests and integrating with web services.
H
h3HTTP server framework for JavaScript runtimes, built on the Request, Response and Headers primitives of the web platform.
HandlebarsJavaScript templating engine that compiles Handlebars templates into functions that render HTML, text and other output.
HandsontableJavaScript data grid that looks and feels like a spreadsheet, with versions for React, Angular and Vue.
- HashiCorp Vault
Server for storing, accessing and encrypting secrets, with an HTTP API, a CLI and a web interface, that applications can call for credentials and keys.
- HastySite
Static site generator written in Nim that builds a site from Markdown contents and Mustache templates.
Hasura GraphQL EngineOpen-source GraphQL server that generates a GraphQL API over existing databases and other data sources, with a hosted Hasura Cloud edition.
Headless UIUnstyled, accessible UI components for React and Vue, designed to work with Tailwind CSS.
- Heckle
Minimal Jekyll clone for Node.js that builds a site from Jekyll-style folders with Mold templates.
- Heroicons
Set of free, MIT-licensed SVG icons for user interface development, with React and Vue packages.
HeroUIOpen-source component library for React web and React Native applications, built on React Aria Components and Tailwind CSS.
HestiaCPWeb control panel for Debian and Ubuntu servers that manages web domains, mail, DNS zones and databases from one dashboard.
HexclaveOpen-source user infrastructure platform for authentication, teams, payments, email and analytics, with a managed cloud and a self-hostable server.
Hey APICode generator that turns OpenAPI specifications into TypeScript clients, schemas and other generated code, published as @hey-api/openapi-ts.
HiawathaOpen source web server for Unix-like systems, focused on security and a small footprint, with CGI, FastCGI and reverse proxy support.
highlight.jsJavaScript syntax highlighter with automatic language detection that runs in the browser and on Node.js.
HistoireVite-based tool that builds interactive story books of components for Vue, React and Svelte.
- hls.js
JavaScript library that plays HTTP Live Streaming video in browsers through HTML5 video and Media Source Extensions.
- Hocuspocus
WebSocket backend for Yjs documents that syncs changes between clients in real time, from the team behind Tiptap.
HologramElixir full-stack web framework whose client-side code runs in the browser as Elixir, compiled to JavaScript.
HonoWeb framework built on Web Standards that runs on any JavaScript runtime.
howler.jsJavaScript audio library for the modern web that plays sounds through the Web Audio API with an HTML5 Audio fallback.
- htmx
Dependency-free browser library that lets HTML attributes make AJAX requests, use CSS transitions, WebSockets and Server-Sent Events.
http4sScala library for typeful, functional and streaming HTTP servers and clients, built on FS2 and cats-effect.
- Huginn
Self-hosted system for building agents that watch the web and incoming events and take automated actions on the user's behalf.
HugoStatic site generator written in Go that builds websites from Markdown content and Go templates.
HyperswitchOpen-source payments orchestration platform that routes transactions across payment processors, with a vault, a control center and reconciliation, self-hosted or hosted by Juspay.
I
IconifyUnified icon framework that loads open source icons from any icon library on demand.
IconoirOpen source SVG icon set with packages for React, React Native, Vue, Flutter and CSS.
ikiwikiWiki compiler that builds wiki pages into a static website, storing page history in a revision control system, with blogging support.
Inertia.jsAdapter protocol and client libraries for building single-page React, Vue and Svelte apps on top of server-side routing.
- Infisical
Open-source platform for managing application secrets, certificates and cryptographic keys, with a CLI, SDKs and a self-hostable server alongside Infisical Cloud.
InngestWorkflow orchestration platform for durable functions with step retries, scheduling and flow control, run by applications through language SDKs and self-hostable as a single server.
InsightFlarePrivacy-friendly web analytics tool that a site owner deploys to their own Cloudflare account and embeds with a small script.
InstantOpen-source backend for web and mobile apps with a client-side, real-time database, auth, permissions, storage and streams.
- InstantSearch
Open source JavaScript UI library of widgets that builds a search interface on Algolia's search API, with React and Vue wrappers.
Intervention ImagePHP image processing library for creating, editing and composing images through one API over GD, Imagick or libvips.
- IPX
Image optimizer that serves images in any size and format from a URL, using sharp for raster images and svgo for SVG.
- ISPConfig
Open source hosting control panel for managing websites, MySQL databases and cron jobs on Linux servers from a web browser.
iTwinUIDesign system from Bentley Systems with a React component library, CSS and design-token packages.
J
JaegerOpen-source distributed tracing platform that collects, stores and shows traces from requests that cross services.
JekyllRuby static site generator that turns plain text, Markdown and Liquid templates into websites and blogs.
jQueryJavaScript library that simplifies HTML document traversal and manipulation, event handling, animation and Ajax.
- JSDoc
Documentation generator that builds HTML API documentation from comments placed in JavaScript source code.
JTL-ShopOnline shop software from JTL-Software-GmbH, written in PHP.
K
- KahunaCart
E-commerce plugin for the Grav CMS that adds a catalog, checkout, payments, shipping and customer accounts.
- Kart
Python static site generator that uses Jinja2 templates and Markdown, with blog and tag index support.
- Kendo UI
Commercial JavaScript UI component library for jQuery, with an open-source Kendo UI Core subset.
KestraOpen-source orchestration platform for data, AI and infrastructure workflows, defined in YAML and run on a server with a web UI.
KeycloakOpen source identity and access management server with OpenID Connect, OAuth 2.0 and SAML 2.0 support.
- KeyDB
Multithreaded, Redis-compatible key-value database and cache server, a fork of Redis.
- KeyHelp
Free server control panel for Ubuntu and Debian that manages domains, email mailboxes, FTP users and MySQL databases.
KeystaticContent management tool that edits Markdown, YAML and JSON files in a codebase, through the local file system or GitHub.
KobalteUI toolkit of unstyled, accessible components and primitives for building web apps with SolidJS.
Kokonut UIOpen-source collection of React components built with Tailwind CSS, Motion and shadcn/ui, installed into a project as source code.
Kong GatewayOpen source API gateway, built on NGINX, that routes, secures and transforms traffic to APIs through plugins, with a Kong Konnect SaaS option.
KratosGo framework for building HTTP and gRPC microservices, with application lifecycle, generated transports, middleware and configuration.
KtorKotlin framework for building asynchronous servers and HTTP clients, extended with plugins and engines.
KumoCloudflare's component library of accessible React UI components for building web applications, built on Base UI.
KuzzleOpen-source backend server with a pre-built API, realtime notifications and data storage for web, mobile and IoT applications.
L
LadleComponent workshop that runs React component stories in a Vite dev server and builds them into a static app.
LangfuseOpen-source platform for tracing, evaluating and monitoring LLM applications, sent from application code through SDKs and OpenTelemetry.
LaradockDocker Compose setup and CLI that starts a pre-configured local stack of PHP, web server and service containers for PHP projects.
LaravelPHP web application framework with routing, an ORM, templating, queues and scheduled jobs.
Laravel HerdDesktop app for macOS and Windows that runs local PHP and Laravel sites on their own domains, with PHP versions and local services managed from one window.
Laravel NovaCommercial administration panel package for Laravel applications.
- Laravel Vite Plugin
Vite plugin that configures Vite for use with a Laravel backend server.
LeafletJavaScript library for mobile-friendly interactive maps that runs in the browser.
legoACME client and library written in Go that obtains, renews and revokes TLS certificates from Let's Encrypt and other ACME servers.
LEPTON CMSContent management system written in PHP that runs on MySQL or MariaDB and is installed by uploading its package to a web space.
LeptosRust framework for building reactive web applications, client-side or full-stack with server rendering and server functions.
- Lerd
Open-source local PHP development environment for Linux and macOS that runs sites, PHP versions and services as rootless Podman containers.
- Less
Backwards-compatible language extension for CSS that compiles Less stylesheets to plain CSS with Node.js or in the browser.
- Lighthouse
Open-source automated tool that audits web pages and web apps for performance, accessibility, SEO and best practices.
- Lightning CSS
CSS parser, transformer, bundler and minifier written in Rust, usable from JavaScript, Rust or a standalone CLI.
- Lightning Web Components
UI framework for building custom elements (web components) with HTML, JavaScript and CSS, maintained by Salesforce.
LimeSurveyOpen-source survey platform for creating surveys that respondents take through a link or an embed on a website.
- Linaria
Zero-runtime CSS-in-JS library that extracts styles written in JavaScript into CSS files at build time.
LitJavaScript library for building web components with reactive properties and declarative HTML templates.
- Litekart
Self-hosted ecommerce platform whose Go backend, GoCommerce, serves the API and an admin panel for a separate SvelteKit storefront.
LiteSpeed Web ServerWeb server from LiteSpeed Technologies, sold under paid licenses, that reads Apache configuration files and includes a WebAdmin console.
LivewireFull-stack framework for Laravel that builds dynamic user interfaces in PHP without a separate JavaScript framework.
Lobe UIReact component library for building AI chat and generated-content web apps.
LocalFree desktop application for developing WordPress sites on the developer's own computer.
LoupePHP full-text search library that stores its index in SQLite and needs no separate search service.
LowdefyConfig-first web framework that builds business apps and internal tools from YAML configuration, served by a Node.js server.
- Lucid
SQL query builder, Active Record ORM and migrations library for AdonisJS applications.
LucideOpen-source set of scalable vector icons, distributed as packages for vanilla JavaScript and for frameworks.
M
MagnoliaMagnolia is a Java digital experience platform for managing and delivering web content, with a Community Edition under GPLv3 and a licensed DX Core.
- Makko
Markdown-based static site generator for blogs and websites, written in Zig.
MAMPLocal web server environment for macOS and Windows with Apache or Nginx, PHP and MySQL, and MAMP PRO, a commercial app for running several local sites.
MantineReact component library with hooks and a theming system, installed from npm as @mantine/core and related packages.
- markdown-it
JavaScript Markdown parser that follows the CommonMark specification and supports syntax extensions and plugins.
MarkoHTML-based language and runtime for building web applications and user interfaces, with the Marko Run application framework.
Master CSSVirtual CSS language with enhanced syntax that generates styles from class names written in HTML and JavaScript.
MastraTypeScript framework for building AI agents and applications.
Material for MkDocsDocumentation framework on top of MkDocs that builds static documentation sites from Markdown.
Material UIReact component library that implements Google's Material Design.
- Material Web
Web components for the Material 3 design system, installed from the @material/web npm package.
MedusaOpen-source headless commerce platform for Node.js with commerce modules, an admin dashboard and REST store and admin APIs.
MercurOpen-source headless platform for building multi-vendor marketplaces, built on the Medusa commerce core.
MetroJavaScript bundler for React Native projects, with a development server and a build API.
- Mezzio
PHP microframework built on PSR-15 middleware, in which the application chooses its routing and templating.
microfeedSelf-hosted content management system for podcasts, blogs, photos, documents and links, running on Cloudflare Workers with D1 and R2 storage.
MicronautJVM application framework for Java, Kotlin and Groovy with compile-time dependency injection, AOP and HTTP servers and clients.
- Microsoft SQL Server
Proprietary relational database management system from Microsoft, with Express, Standard and Enterprise editions.
- Milvus
Vector database for storing and searching embeddings, run as a Docker or Kubernetes server or as Milvus Lite, a Python library.
ministaStatic site generator that builds websites from React JSX components with Vite.
miseCommand-line tool that installs a project's dev tools, sets its environment variables and runs its tasks from one mise.toml file.
MongoDBDocument database server built on the document model, offered as a community edition and as commercial Enterprise editions.
Movable TypeCommercial publishing and blogging system from Six Apart that publishes static pages, dynamic pages or both from templates.
N
n8nWorkflow automation platform for building AI agents and workflows on a visual canvas, self-hosted or in the cloud.
Naive UIVue 3 component library written in TypeScript, with a theme system configured through JavaScript theme overrides.
NATSMessaging server that routes messages between applications and services by subject, with optional persistence through JetStream.
Neo4jNative graph database server that stores nodes and relationships and is queried with the Cypher language.
NeosOpen-source content management system and application framework for websites and digital content, built on the Flow PHP framework.
NestJSProgressive Node.js framework for building efficient, scalable server-side applications with TypeScript.
- Netty
Java network application framework for building protocol servers and clients with an asynchronous, event-driven model.
Next.jsReact framework for building full-stack web applications, with routing, rendering and data fetching.
- NG-ZORRO
Angular UI component library based on Ant Design.
nginxC-based HTTP web server with reverse proxy, content cache, load balancer and mail proxy features.
Nginx Proxy ManagerWeb admin interface for managing Nginx reverse proxy hosts, distributed as a Docker image with free Let's Encrypt certificates.
NiftDependency-aware command-line build tool and template language that generates websites from HTML, content and data files.
- Nitro
TypeScript server toolkit for full-stack servers with filesystem routing, storage, caching and a Vite plugin, deployable to Node.js, Bun, Deno and serverless hosts.
- NocoDB
Spreadsheet-style interface for building online databases on SQLite, PostgreSQL or an existing database, self-hosted with Docker or offered as NocoDB Cloud.
- Node-RED
Browser-based flow editor and Node.js runtime for building event-driven applications that connect devices, services and data.
NovuOpen-source notification infrastructure with one API for sending messages across in-app inbox, email, SMS, push and chat channels, self-hostable or available as a cloud service.
ntfySelf-hostable HTTP publish-subscribe server that delivers published messages as push notifications to phones, desktops and browsers.
NuxtVue-based framework for building server-rendered, static and hybrid websites and web apps.
- Nuxt Content
File-based content module for Nuxt that queries Markdown, YAML, CSV and JSON files from a Vue application.
- Nuxt UI
Vue component library built on Reka UI and Tailwind CSS, used as a Nuxt module or as a Vite plugin in plain Vue apps.
- nvm
POSIX shell script that installs and switches between multiple Node.js versions for one user.
NxMonorepo task runner and build system for TypeScript and polyglot codebases, with caching and affected-only runs.
O
OAuth2 ProxyGo reverse proxy that adds OAuth 2.0 and OpenID Connect authentication in front of web applications.
- Ocsigen Eliom
OCaml framework for building client and server web and mobile applications as a single program.
- Octicons
Set of SVG icons built by GitHub, with helper packages for JavaScript, React and Ruby.
OdooSuite of web-based open source business apps, including a website builder and an e-commerce app.
- Open Web Analytics
Open source web analytics framework that records visits to websites and applications and reports on them, with a JavaScript tracker and a PHP server.
OpenCartOpen source ecommerce platform written in PHP for running an online store on a web server.
OpenMeterOpen-source usage metering and billing platform that ingests usage events and bills customers for the usage.
Optimizely CMSCommercial .NET content management system from Optimizely, installed from NuGet packages on Microsoft SQL Server.
Oracle ADFJava EE application framework from Oracle for building enterprise applications in JDeveloper and running them on an application server with the ADF runtime installed.
- Oracle AI Database
Commercial relational database from Oracle, with a free developer edition and fully supported paid editions.
OramaSearch library for full-text, vector and hybrid search that runs in the browser, on a server or at the edge.
- Ory Hydra
OpenID Certified OAuth 2.0 and OpenID Connect server that issues tokens and connects to an existing login and consent app.
P
PagefindStatic search library that builds a search index from built HTML at build time and serves search from static files.
Panda CSSStyling engine that generates atomic CSS at build time from type-safe TypeScript style definitions.
PandocHaskell library and command-line tool that converts documents between markup formats.
Parse ServerOpen source backend for web and mobile apps that runs on Node.js, stores data in MongoDB or PostgreSQL, and can be mounted on an Express app.
PayloadTypeScript framework that runs inside a Next.js app and generates an admin panel, database schema and REST, GraphQL and local APIs from one config, used as a headless CMS or application backend.
PestTesting framework for PHP that is built on PHPUnit and adds an expressive syntax for writing tests.
Petal ComponentsShadcn-style HEEx component library for Phoenix LiveView apps, styled with Tailwind CSS and installed from Hex.
pgAdminOpen-source administration and development tool for PostgreSQL, run as a desktop application or as a web application.
PgDogPostgreSQL connection pooler, load balancer and database sharder written in Rust.
PGliteEmbeddable WebAssembly build of PostgreSQL, packaged as a TypeScript and JavaScript library for the browser, Node.js, Bun and Deno.
PhalconFull-stack PHP web framework delivered as a PHP extension.
Phosphor IconsOpen-source icon family of SVG icons in six weights, with packages for the web, React, Vue and other frameworks.
- PHP-FPM
FastCGI process manager for PHP, built as an optional SAPI in the PHP source tree.
PHPUnitUnit testing framework for PHP, installed with Composer and run from the command line.
PimcoreOpen-core PHP platform for product experience management, combining PIM, DAM, CMS and digital commerce modules.
Play FrameworkJava and Scala web framework whose production build is a distribution that runs as a server process, with Twirl templates.
- Playroom
Design environment that renders JSX from a team's own component library across themes and screen sizes.
PlaywrightBrowser automation and end-to-end test framework that drives Chromium, Firefox and WebKit through one API.
- Plesk
Proprietary hosting control panel for managing websites, DNS, mail and other services on Linux and Windows servers.
PM2Process manager for Node.js and Bun applications that keeps them running, with a built-in load balancer.
PocketBaseOpen-source Go backend shipped as a single executable, with an embedded SQLite database, realtime subscriptions, authentication and a dashboard.
PoeticMetricOpen source website analytics tool that uses no cookies, offered as a managed service on poeticmetric.com or self-hosted with Docker Compose.
- Pollen
Book-publishing system written in Racket that embeds code in text documents for multiple-output publishing.
- Porsche Design System
Design system of Web Components with npm wrapper packages for React, Angular, Vue and vanilla JavaScript, published by Porsche AG.
PostCSSTool for transforming CSS with JavaScript plugins.
PostgRESTStandalone web server that serves a RESTful API directly from a PostgreSQL database schema.
PostHogProduct analytics platform with session replay, feature flags, experiments, error tracking and surveys, self-hosted from its code or run as PostHog Cloud.
PreactJavaScript library for building component-based user interfaces on a virtual DOM, with a React-compatible API through an optional alias.
- Prefect
Python workflow orchestration framework that runs flows on schedules, events or API calls, with a self-hostable server.
PrettierOpinionated code formatter for JavaScript and many other languages that rewrites source to a consistent style.
- PrimeNG
UI component library for Angular, distributed as the npm package primeng.
- PrimeReact
React UI component library made by PrimeTek, published on npm.
- PrimeVue
Vue UI component library made by PrimeTek, published on npm.
Prisma ORMTypeScript and Node.js object-relational mapper that generates a type-safe database client from a schema file.
Progress SitefinityCommercial .NET content management and digital experience platform from Progress, offered on-premises or as a cloud service.
PubliiDesktop CMS for Windows, macOS and Linux that builds static websites on the author's computer.
- Puck
Open-source visual editor library for React that lets users build drag-and-drop pages from the components an app defines.
PushwordSymfony-based content management system for websites, with Markdown or database content and an optional static export.
- pyenv
Shell-based version manager that switches between multiple installed Python versions.
Q
QdrantVector search engine and vector database, run as a server with a REST and gRPC API, also offered as Qdrant Cloud.
QuarkusJava framework for building cloud-native applications that run on the JVM or as native executables.
QuasarVue.js framework with UI components and a CLI that builds single-page, server-rendered, static, PWA, mobile, desktop and browser extension apps.
QwikFramework for web apps that resumes on the client instead of hydrating, with Qwik City for routing and server rendering.
R
- Radiance
Web application environment for Common Lisp, for personal websites and deployable applications.
Radix IconsSet of 15×15 icons that ships as individual React components on npm.
Radix PrimitivesUnstyled, accessible React component primitives for building design systems and web apps.
Radix ThemesPre-styled, open-source component library designed to work out of the box with minimal configuration.
ReactJavaScript library for building component-based user interfaces for the web, with react-dom for browsers and server rendering.
React AriaUnstyled, accessible React components and hooks from Adobe for building custom UI, published as react-aria-components.
- React Bootstrap
Bootstrap components rebuilt as React components, installed from npm alongside the Bootstrap stylesheet.
React CosmosSandbox for developing and testing React UI components in isolation, with file-based fixtures, a playground interface and a static export.
- React Native for Web
Implementation of React Native's components and APIs for the web, rendering through React DOM.
React RouterRouter for React whose framework mode adds server rendering, static pre-rendering and data loading for building full-stack web apps.
- React Spectrum
React component library implementing Adobe's Spectrum design system, with accessible and adaptive components.
React SuiteReact component library of UI components, published as the rsuite npm package.
RedictDistributed key/value store, an independent LGPL-licensed fork of Redis.
RedisIn-memory data store used as a cache, database and streaming engine, offered under source-available and open-source licenses.
ReflexPython library for building full-stack web apps, with the frontend compiled to React and the backend run as a Python server.
RemixFull-stack web framework built on Web APIs that combines routing, data, UI and asset compilation in one stack.
reveal.jsOpen-source HTML presentation framework for building slide decks that run in a web browser.
RocketAsync web framework for Rust with typed routes, request guards and built-in form and JSON handling.
RolldownJavaScript and TypeScript bundler written in Rust with a Rollup-compatible API, designed as the bundler of Vite.
RollupJavaScript module bundler that compiles ES module source into bundles for browsers, Node.js and other platforms.
RsbuildBuild tool for modern web applications that runs on Rspack and supports React, Vue, Svelte and other frameworks.
RspackFast Rust-based bundler for the web with a modernized webpack API.
RspressStatic site generator built on Rsbuild that turns Markdown and MDX files into documentation websites.
Ruby on RailsRuby web application framework with an ORM, routing, ERB views, background jobs and built-in deployment tooling.
RustFSS3-compatible distributed object storage server written in Rust.
S
- S3Proxy
Java server that speaks the S3 API and forwards requests to other object storage backends, such as AWS S3, Azure Blob Storage, Google Cloud Storage, the local filesystem and SFTP.
SanicAsynchronous Python web framework with its own production-ready web server.
- Sanity UI
React component library and design system from Sanity, with layout primitives and theme tokens for building accessible web apps.
ScalarOpen-source API reference renderer that turns OpenAPI and AsyncAPI documents into interactive API documentation.
- Search API
Drupal module that provides a framework for creating searches on Drupal entities, backed by a search server or Drupal's own database.
- SeaweedFS
Distributed file system and S3-compatible object store, written in Go, shipped as one weed binary.
SEED DesignDesign system from Daangn that delivers one set of design tokens to React, Lynx and CSS packages.
Semi DesignReact component library and design system from the Douyin front-end team, with themes built on design tokens.
SentryApplication monitoring and error tracking platform, self-hosted or offered as Sentry SaaS.
ServiceStackServices framework for .NET that builds HTTP and message-based web services from typed request DTOs.
shadcn-svelteSvelte port of shadcn/ui, with components that a CLI copies into a project's source code.
shadcn-templGo and templ components whose source code is added to a project with a CLI, so the project can customize it.
shadcn-vueVue components whose source code is added to a project with a CLI, so the project can customize it.
shadcn/uiComposable React components whose source code is added to a project with a CLI, so the project can customize it.
sharpNode.js module that resizes and converts JPEG, PNG, WebP, AVIF and other image formats, using the libvips image library.
ShikiSyntax highlighter for JavaScript runtimes that colors code with the TextMate grammars used by VS Code.
- Siemens iX
Open-source design system of web components for industrial software interfaces, with packages for React, Vue and Angular.
SigNozOpen-source observability platform built on OpenTelemetry that covers logs, metrics, traces, alerts and dashboards.
Simple IconsIcon set of SVG logos for popular brands, published as an npm and Composer package.
- Sinatra
Ruby DSL for building web applications with a small set of route definitions, run on a Rack server.
Sitecore XPCommercial content management and digital experience platform from Sitecore, sold as an on-premises product and a cloud product.
Skeleton SvelteSvelte component package of the Skeleton design system, which is built on Tailwind CSS.
SlidevMarkdown-based slides maker and presenter that builds slide decks as web pages with Vue and Vite.
Socket.IOLibrary that enables low-latency, bidirectional and event-based communication between a client and a server.
SockudoSelf-hosted realtime server written in Rust that serves Pusher-compatible WebSocket and HTTP APIs.
SolidStartFull-stack application framework for Solid, built on Vite.
- Sonic
Schema-less search backend server written in Rust that indexes words against identifiers.
SpartanAccessible UI primitives for Angular, with the behavior installed from npm and the styled components copied into the project.
- Spectrum Web Components
Web components implementing Adobe's Spectrum design system, open source and usable with any web framework or none.
SPIPPublishing system for the Internet, written in PHP, for multilingual websites with collaborative editing.
Spree CommerceOpen-source commerce platform built on Ruby on Rails, with a REST API, TypeScript SDKs and a Next.js storefront.
Spring BootJava framework for building stand-alone Spring applications with an embedded web server and auto-configuration.
Spring FrameworkComprehensive programming and configuration model for Java-based enterprise applications, on any deployment platform.
- SQLite
Public-domain C library that implements a self-contained SQL database engine in a single file.
StaaticWordPress plugin that crawls a WordPress site into a static copy and publishes that copy to static hosting.
StarletteLightweight ASGI framework and toolkit for building async web services in Python.
StarlightDocumentation theme and integration for the Astro framework that builds documentation websites from Markdown, Markdoc and MDX.
StatamicLaravel-based content management system that stores content in flat files or a database, with a control panel and optional static site generation.
StencilToolchain that compiles TypeScript components into web components, distributable as custom elements, framework wrappers or prerendered websites.
Stirling PDFOpen-core PDF editing and processing platform for self-hosted servers and a hosted service, with a REST API.
- Stog
Static site and blog generator written in OCaml that compiles XML documents, with Markdown sources through a plugin.
StreamlitPython framework that turns scripts into interactive web apps for data work.
- Style Dictionary
Build system that exports design tokens defined once in JSON or JavaScript to platform formats such as CSS, iOS, Android and JavaScript.
- styled-components
Styling library for React that writes component styles as CSS in tagged template literals.
- styled-jsx
Babel plugin and runtime that transpile CSS written in style tags inside JSX components into class names scoped to that component.
- Stylelint
CSS linter that reports errors and enforces conventions in stylesheets, with rules, plugins and shareable configs.
StyleXJavaScript styling library whose build-time compiler turns style definitions into atomic CSS class names.
SuperTokensOpen source user authentication server, Core, with frontend and backend SDKs, self-hosted or as a managed cloud service.
SurrealDBMulti-model database, built in Rust, that stores document, graph, relational and time-series data in one engine and can run embedded or as a server.
SurveyJS Form LibraryOpen-source JavaScript form library that renders JSON-defined forms and surveys in React, Angular, Vue and plain JavaScript applications.
SVAR Svelte CoreSvelte component library of form controls, popups, notifications and other UI elements, published as @svar-ui/svelte-core.
SvelteCompiler that turns Svelte components into JavaScript that updates the DOM directly, used to build web applications.
SvelteKitSvelte-based framework for building web applications with server rendering, prerendering and client-side rendering.
Sveltia CMSGit-based headless CMS, a single-page admin interface for editing content stored in a Git repository of a static site.
SVGONode.js library and command-line application that optimizes SVG files by removing redundant information, with a browser bundle and a webpack loader.
SvixOpen source webhook service that sends webhooks with retries, signatures and a customer-facing portal, self-hosted or as a hosted service.
SWCRust-based platform that compiles, bundles and minifies JavaScript and TypeScript, with npm packages for its JavaScript APIs.
SwooleCoroutine-based PHP extension for concurrent networking and TCP, UDP, Unix socket, HTTP and WebSocket servers.
SymfonyPHP full-stack web framework built from a set of reusable, standalone components.
- Symfony AssetMapper
Symfony component that maps asset directories to versioned public files and loads JavaScript through browser importmaps, without a bundler.
T
TablerFree and open source HTML dashboard UI kit built on Bootstrap 5, with layouts and components for admin panels and web apps.
Tabler IconsSet of free, MIT-licensed SVG icons on a 24x24 grid, published as npm packages for plain HTML and for several frameworks.
Tailwind CSSUtility-first CSS framework that generates styles from class names used in HTML and other templates.
Tailwind VariantsFirst-class variant API for Tailwind CSS that defines typed component recipes with variants, slots and compound styles.
tailwind-mergeUtility function that merges Tailwind CSS classes in JavaScript so that conflicting classes resolve without style conflicts.
TallStackUISuite of more than 80 Blade components for TALL Stack applications built with Laravel, Livewire, Alpine.js and Tailwind CSS.
TamaguiUniversal styling and UI component library for React and React Native, with an optimizing compiler for web and native.
TanStack QueryAsynchronous state management and data-fetching library that caches, updates and synchronizes server state in web applications.
TanStack StartFull-stack framework for React and Solid, powered by TanStack Router, for server-rendered, static and client-only web apps.
TDesign ReactReact component library for the TDesign design system, published as the tdesign-react npm package.
TemporalOpen-source durable execution platform whose server runs workflows and retries failed steps, self-hosted or as Temporal Cloud.
TerserJavaScript minifier and compressor for ES6+ code, used from the command line or through the Node.js API.
TheliaOpen-source e-commerce CMS and framework built on Symfony for online stores and web content.
- TiDB
Open-source distributed SQL database, MySQL compatible, that supports hybrid transactional and analytical workloads.
tinyhttpExpress-like web framework for Node.js, written in TypeScript and published as native ESM.
TiptapHeadless rich-text editor framework for web applications, built on ProseMirror.
TomeDrupal module that generates static HTML from a Drupal site and keeps its content as files.
ToolJetOpen-source low-code platform for building internal tools and dashboards on existing databases and APIs, self-hosted or as ToolJet Cloud.
- Topcoat
Rust framework that renders full-stack web apps as HTML on the server, with client reactivity compiled from the same Rust code.
TornadoPython web framework and asynchronous networking library that runs its own HTTP server rather than WSGI.
TraefikCloud-native application proxy and reverse proxy that discovers routes from container, orchestrator and file providers.
TraksSelf-hosted web analytics that runs on Cloudflare Workers, Durable Objects, D1 and R2 in the site owner's own Cloudflare account.
- Trigger.dev
Open-source platform for building durable AI agents and background tasks in TypeScript, offered as a cloud service and for self-hosting.
tsdownBundler for TypeScript and JavaScript libraries that emits ESM, CJS, IIFE or UMD bundles and declaration files, built on Rolldown.
TurboJavaScript framework from Hotwire that updates server-rendered web applications by sending HTML over the wire.
- Turbopack
Incremental bundler for JavaScript and TypeScript, written in Rust, that ships inside Next.js.
- Turborepo
Build system written in Rust that runs the package.json scripts of JavaScript and TypeScript monorepos with caching and parallel execution.
- Turso Database
Embedded SQL database engine written in Rust that is compatible with SQLite, with a hosted service beside it.
TwindCompiler that turns Tailwind-style utility classes into CSS at runtime in the browser or in JavaScript environments, without a build step.
txtaiPython framework for semantic search, LLM pipelines and workflows, with an embeddings database, a web API and Docker images.
TypeDocDocumentation generator that builds HTML or JSON API documentation from the comments of TypeScript projects.
TypeScriptProgramming language that adds static types to JavaScript, with a compiler (tsc) that converts its code to JavaScript.
TypesenseOpen-source search server with an HTTP API that indexes collections of documents for instant search, self-hosted or as Typesense Cloud.
- Typesense InstantSearch Adapter
JavaScript adapter that connects InstantSearch.js and its React, Vue and Angular bindings to a Typesense search server.
U
U.S. Web Design SystemPublic domain library of user interface components, CSS, JavaScript and a visual style guide designed for U.S. federal government websites.
- uFuzzy
JavaScript fuzzy search library that matches a short search phrase against a list of phrases without building an index.
- uhtml
Micro HTML and SVG renderer for building reactive web pages with template literals.
UmamiOpen-source web and product analytics platform, self-hosted or offered as Umami Cloud.
UnpolyJavaScript and CSS library that makes links, forms and server-rendered HTML pages update fragments without a full page load.
UsertourOpen-source user onboarding platform for in-app product tours, checklists and surveys.
V
Vaadin Web ComponentsSet of web components for business web applications, published by Vaadin as one npm package per component.
- validator
Go package that validates struct and field values using struct tags.
ValkeyBSD-licensed in-memory key-value datastore for caching, message queues and primary database use, forked from Redis.
vanilla-extractBuild-time CSS tool that lets styles be written in TypeScript, with locally scoped class names and CSS variables.
VantVue component library for mobile web apps, written in TypeScript.
- Vapor
Server-side Swift HTTP web framework for building backends, web apps, APIs and HTTP servers.
- Velite
Content layer library that turns Markdown, MDX, YAML and JSON files into typed data for a JavaScript or TypeScript application.
VendureOpen-source headless commerce framework built on Node.js and TypeScript, with a GraphQL API.
- Vercel CLI
Command-line interface of the Vercel hosting platform, used to deploy projects, run them locally and manage them from a terminal.
Vibe Design SystemReact component library and design system from monday.com, with styles, tokens and guidelines for application development.
- VictoriaMetrics
Time series database and monitoring solution that stores metrics pushed by applications and agents, with a Prometheus-compatible query API.
VinxiJavaScript toolkit for composing full stack applications and frameworks from Vite and Nitro primitives.
Vinyl CacheCaching HTTP reverse proxy, installed in front of any HTTP server to cache its responses, configured with the Vinyl Configuration Language (VCL).
ViteFrontend build tool and dev server for web applications, with a development server and a production bundler.
VitePressStatic site generator built on Vite and Vue that turns Markdown content into content-centric websites.
VitessCloud-native, horizontally scalable distributed database system built around MySQL.
VitestTesting framework for JavaScript and TypeScript projects, built on Vite.
VocsDocumentation framework that builds Markdown and MDX sources into docs sites, powered by Vite.
VueJavaScript framework for building user interfaces on the web, with a reactive rendering system and optional server rendering.
- Vue (Official)
Language tooling for Vue single-file components, with the Vue (Official) VS Code extension, a language server and the vue-tsc type checker.
VuetifyOpen source UI component framework for Vue, distributed as the vuetify npm package.
Vuetify0Headless Vue components and composables with no styling, distributed as the @vuetify/v0 npm package.
W
wasm-packCommand-line tool that builds Rust crates into WebAssembly packages for JavaScript, with npm publishing support.
- WaveMaker
Low-code platform for building web and hybrid mobile applications, offered as a cloud service and as an on-premise installation.
- wbsx
Command-line toolkit that builds websites and web apps from XML with XSLT stylesheets.
Web AwesomeLibrary of framework-agnostic web components with CSS styling, from the team behind Font Awesome.
WebminWeb-based administration tool for Unix-like servers that configures system files and server applications such as Apache HTTP Server, BIND and MySQL.
- WebOptimizer
ASP.NET Core middleware that bundles and minifies CSS and JavaScript files at runtime and keeps the output in memory.
webpackJavaScript module bundler that packs application modules and assets into optimized output for browsers and other runtimes.
WordPressOpen-source PHP content management system for websites and blogs, with a block editor, themes and plugins.
WorkermanAsynchronous, event-driven PHP framework for building network servers that handle HTTP, WebSocket and custom socket protocols.
X
- XAMPP
Free distribution of Apache, MariaDB, PHP and Perl for setting up a local development server on Windows, Linux and macOS.
XataOpen-source platform for running many PostgreSQL instances on Kubernetes, with copy-on-write branching and scale-to-zero.
Xperience by KenticoContent management and digital experience platform for .NET web applications, with marketing and commerce features.
Y
Z
ZasStatic site generator written in Go that renders Markdown and HTML pages through a shared layout.
- Zero
Sync engine that keeps a client-side datastore of a web app in step with a Postgres database.
ZodTypeScript-first schema validation library that validates data and infers static types from the same schemas.
ZolaStatic site generator distributed as a single binary, with the Tera template engine, Sass compilation and search built in.
- zs
Static site generator written in Go that builds Markdown and HTML files into a site, with plugins, hooks and routes.
A
AblyHosted realtime messaging service for chat, live and collaborative apps, reached through its SDKs and APIs.
- Acoustic Content
Hosted headless content platform that stores content in its own database and delivers it through REST APIs, with a content UI and a Sites feature.
AddSearchHosted site search service that indexes a website through its crawler or API and is added to the site through script tags.
AdyenHosted payment platform that accepts online and in-person payments and sends payouts through one API.
- Agility CMS
Hosted headless content management system with a visual page editor, a Fetch API served over a CDN, and a Management API.
AlgoliaHosted AI search and retrieval platform, served through APIs from data centers in multiple regions.
- Amazon Cognito
Hosted identity platform run by AWS for web and mobile apps, with a user directory, sign-in and OAuth 2.0 tokens.
- Amazon SES
Cloud email service from Amazon Web Services for sending and receiving email through an SMTP interface or an API.
AmplienceHosted content operations platform for commerce that manages content and media and delivers them through HTTP and GraphQL content APIs.
APIrocketHosted service that builds a GraphQL API and a headless content editor for a project from a data model designed in its web app.
AppSignalHosted error tracking and application performance monitoring service, connected to applications through language SDKs.
- Arc XP
Hosted media content platform for publishers and broadcasters, with a newsroom editor, headless delivery through REST APIs and a front-end PageBuilder engine.
Athos CommerceHosted AI product search service for online stores, sold by Athos Commerce.
Athos CommerceHosted AI site search service for online retailers, sold by Athos Commerce.
Auth0Hosted customer identity service that handles user login, single sign-on and user management for apps through APIs and SDKs.
- Axiom
Hosted data platform that collects, stores and analyzes event and telemetry data such as logs, traces and metrics.
B
- BagelDB
Hosted content platform and database with a web admin, a REST content API and client libraries.
BaseHubHosted headless CMS with a block editor, Git-style commits and a GraphQL API.
- Basin
Hosted form backend and form builder that receives submissions from any HTML form and forwards them by email, webhook and integrations.
- BCMS
BCMS is a headless CMS offered as the hosted BCMS Cloud, with a public but no longer maintained open-source repository.
- Better Stack
Hosted observability platform that combines log management, tracing, uptime monitoring, status pages and incident management.
BigCommerceHosted commerce platform for online stores, with REST and GraphQL APIs for headless storefronts.
- Bloomreach Content
Hosted content management platform from Bloomreach that delivers content to websites and apps through a Delivery API.
BonsaiHosted service that runs fully managed Elasticsearch and OpenSearch clusters for search applications.
BrevoHosted email and messaging platform with RESTful APIs and SMTP for transactional email, and tools for email marketing.
BrowserbaseHosted platform that runs cloud browsers, search and fetch for AI agents and applications, reached through an API.
Builder.ioHosted platform for visual page building and headless content, with a visual editor and a code product that works on existing repositories.
Builder.ioHosted visual development and headless CMS platform, with open-source SDKs for rendering its content in JavaScript and mobile frameworks.
- ButterCMS
Hosted headless content management system with a content API, a dashboard for editors and client libraries for several languages.
ButterCMSHosted headless content management system for pages, collections and blog posts, delivered to websites and apps through a REST API.
C
CaisyHosted headless content management system with a GraphQL API, a web editor and TypeScript SDKs.
ChargebeeHosted billing, subscription and revenue operations platform for subscription and usage-based businesses.
ChromaticHosted testing service that captures snapshots of UI states from Storybook, Vitest, Playwright and Cypress tests and compares them across browsers.
CleavrHosted platform that provisions and manages servers from the user's own cloud providers and deploys PHP and Node.js apps to them.
- Clerk
Hosted authentication and user management service for applications, with an API and prebuilt components.
CloudCannonHosted Git-based content management system that edits the files of a static site in a repository, with visual editing and optional hosting.
- Cloudflare D1
Managed serverless SQL database that Cloudflare runs for Workers and Pages projects, with SQLite's SQL semantics.
- Cloudinary
Hosted image and video platform with APIs for uploading, transforming, optimizing and delivering media through a CDN.
- Cloudrexx
Content management system written in PHP, published as open source under the AGPL.
CludoHosted site search and AI answer service for websites, with a dashboard for search settings and a REST API.
CmssyHosted headless CMS with a visual page editor, an AI assistant and a GraphQL delivery API for a Next.js frontend.
ComfortableHosted headless CMS for websites and apps, with a REST content API, a JavaScript SDK and a web interface for editors.
Commerce LayerHosted headless commerce platform with a REST API for checkout, orders, inventory and promotions.
commercetoolsHosted headless commerce platform with HTTP and GraphQL APIs and a Merchant Center admin interface.
ConfigCatFeature flag and remote configuration service, offered as a hosted service, with an open-source proxy that runs in the user's own infrastructure.
ConstructorHosted AI product search and discovery service for ecommerce websites, with a REST API, client libraries and a merchant dashboard.
ContensisHosted digital experience platform from Zengenti with a RESTful delivery API, a dashboard for editors and roles per project.
- Content Hub ONE
Hosted content platform from Sitecore for building and delivering content of any type to any channel, with GraphQL and REST APIs.
- ContentChef
Hosted headless content management service with a schema language, content APIs and a web app for authors.
- Contentful
Hosted headless content platform that stores structured content and delivers it through REST and GraphQL APIs.
ContentoHosted headless CMS for marketing websites, with a REST content API, a visual preview for Next.js and a hosted admin panel.
ContentstackHosted headless CMS with REST and GraphQL content delivery APIs, live preview, custom roles and a web interface for authoring content.
- Cookiebot
Hosted consent management platform for website owners, sold as Cookiebot CMP by Usercentrics.
Core dnaHosted digital experience platform from Core dna that combines content management, eCommerce, multi-site orchestration and forms.
CosmicHosted headless CMS for content teams, with a web dashboard, a REST API and a JavaScript SDK.
CourierHosted customer messaging platform that sends email, SMS, push, chat and in-app notifications through the provider accounts a team already uses.
CoveoHosted enterprise AI search platform that indexes content from many systems and serves search, generative answers and product discovery through APIs and UI libraries.
CrowdinHosted localization platform that manages translation of software, app and website content through a web workspace, integrations and an API.
CrystallizeHosted headless commerce and product information management service with a GraphQL API and a web app for teams.
D
DatabuddyHosted product analytics platform for websites and apps, with error tracking, Web Vitals, feature flags and uptime monitoring.
DatadogHosted monitoring and security platform for infrastructure, applications, logs and errors, with agents and SDKs that send data to it.
DatoCMSHosted headless content management system that delivers content through a read-only GraphQL API and manages it through a REST API.
DescopeHosted customer and agentic identity platform for sign-up, login, single sign-on and user management, configured with visual workflows and SDKs.
DevCycleHosted feature flag platform built on OpenFeature, with client and server SDKs that evaluate flags in applications.
DialoguewiseHosted headless CMS that delivers multi-platform content through an API, with a web portal for authoring and deployment.
DisqusHosted comment and community platform for websites, embedded with a script snippet or a plugin.
- doc2.site
Hosted service that turns Google Docs, Sheets and Drive files into structured content and publishes it as HTML and JSON through an API.
- doc2.site
Hosted service that publishes Google Docs and Sheets content as HTML and JSON through a headless API and a browser extension.
DocRaptorHosted HTML-to-PDF conversion API that renders HTML and CSS to PDF with the Prince engine.
DoofinderHosted AI search and product discovery service for ecommerce stores, with site search, recommendations and category merchandising through platform modules or an API.
DropInBlogHosted blog platform that embeds a blog into an existing website, or serves it headlessly through an API and SDKs.
E
- Easyweb
Hosted headless content management system with a web editing interface and a REST API.
EnvoyerHosted zero-downtime deployment service for PHP and Laravel applications.
ExpertRecHosted AI search and merchandising service for e-commerce and content websites, with platform plugins and a search API.
F
- Fern
Platform and open-source CLI that generates SDKs, API documentation and CLIs from API definitions such as OpenAPI.
- Filestack
Hosted file upload, transformation and delivery API with a picker, storage destinations and SDKs for web and server-side apps.
FirebaseGoogle's hosted platform of backend services for web and mobile apps, including authentication, databases, hosting, storage and messaging.
FlamelinkHosted headless CMS interface for Google Firebase projects, with a no-code web user interface for content editors.
FlotiqHosted, API-first headless CMS with a web admin panel and auto-generated APIs for each content model.
ForminitHosted headless form backend API that receives submissions from forms the user builds, validates and stores them and sends them on by email, webhooks and integrations.
FormspreeHosted form backend that receives submissions from HTML forms, stores them, filters spam and sends them on by email and through integrations.
FoxyHosted shopping cart and checkout that a website adds through a link, button or form, for products, subscriptions and donations.
- Fridge
Hosted content management platform for any kind of content, with a dashboard for editors and a RESTful content API for apps and websites.
Friendly CaptchaHosted, invisible CAPTCHA service that protects websites and apps from bots with a proof-of-work puzzle that runs in the visitor's browser.
G
- Garchi CMS
Hosted headless CMS for website and app content, edited in a dashboard, read through a REST API and reachable by AI agents through MCP.
GitCMSHosted content management service that lets teams, clients and AI agents edit, review and publish Markdown and MDX content stored in a website's Git repository.
GridlyHosted localization and content platform that manages content in a spreadsheet-style interface and exposes it through a REST API.
GridPaneHosted control panel for provisioning servers and running WordPress websites on them, for agencies and hosting businesses.
H
- Headly
Hosted headless CMS with draft, review and approval workflows, locales, and per-project API keys for delivering content to frontends.
HoneybadgerHosted error tracking and logging service for web applications, with SDKs for several languages.
HookdeckHosted webhook infrastructure that receives inbound webhooks, routes and queues them, and delivers outbound events from an application to its customers.
HygraphHosted headless content management system with a GraphQL content API and content federation from remote sources.
Hyvor TalkHosted comment, reaction and rating service that websites embed with a script, with moderation tools.
I
ImageKitHosted image and video transformation, delivery and digital asset management service, with transformations set by URL parameters.
- imgix
Hosted image processing service that transforms, optimizes and delivers images and video through URL parameters.
InkeepHosted platform for AI assistants and agents that answer questions from a company's knowledge sources through Unified AI Search.
iubendaHosted compliance service that generates privacy and cookie policies and runs cookie consent banners for websites and apps.
J
- JekyllPad
Browser-based visual editor that edits the Markdown content of static sites stored in a GitHub repository.
K
kapa.aiHosted platform that ingests a company's documentation, tickets and other sources and answers questions over them with AI retrieval, delivered as a widget, bots, an API or an MCP server.
KindeHosted authentication, user management and authorization service for web and mobile apps, with SDKs and an API.
KnockHosted notification service with a managed API and dashboard for sending in-app and out-of-app product notifications.
Kontent.aiHosted headless content management platform with a web app for content teams and REST and GraphQL delivery APIs for developers.
L
Laravel ForgeHosted server management and deployment service that provisions servers on cloud providers or Laravel VPS and deploys web applications to them.
LaunchDarklyHosted feature flag and runtime control service that applications read through LaunchDarkly SDKs.
Lemon SqueezyHosted payments, subscriptions and merchant-of-record service for selling software, digital downloads and license keys.
- LexasCMS
Hosted headless content management platform for e-commerce, with content scheduling, personalized content and visual previews.
LiveblocksHosted realtime service with sync, presence, comments and notifications for multiplayer apps.
- Localazy
Hosted translation management platform for software, mobile and web app strings, with a CLI, an API and a language CDN.
LocizeHosted localization management platform for websites and apps, with a CDN and an API that deliver translations to the product.
LogRocketHosted session replay, product analytics and error tracking service for web and mobile apps, fed by a client SDK.
- Lokalise
Hosted localization platform for software, websites and mobile apps, with an API, a CLI and translation workflow management.
LoopsHosted email platform for SaaS companies that sends marketing, lifecycle and transactional email, managed through a web app and a REST API.
Luigi's BoxHosted AI-powered search and product discovery service for e-commerce stores.
M
MailerSendHosted transactional email service with an email API, an SMTP relay and official SDKs.
- Mailgun
Hosted email API and SMTP service for sending, receiving and tracking email, run by Sinch.
MailtrapHosted email API, SMTP and email sandbox service for testing and sending email.
- Make
Hosted visual automation platform for building workflows and AI agents that connect business apps.
- Makeswift
Hosted visual website builder that edits the React components of a Next.js app.
MarbleHeadless CMS for blogs, changelogs and articles, offered as a hosted workspace with a dashboard, a REST API and media hosting.
microCMSJapan-made, API-based hosted headless CMS with an admin panel for editors and a REST content API.
- Mintlify
Hosted documentation platform that builds sites from MDX files in a Git repository, with the mint CLI for local preview.
Modern Campus CMSHosted content management system for higher education institutions' websites, sold by Modern Campus with its SaaS hosting.
MollieHosted payment platform for online and in-person payments, with an API that websites and apps call to accept payments.
- MongoDB Atlas
Multi-cloud database service from MongoDB, Inc. that deploys and manages MongoDB databases.
N
O
OneEntryHosted backend-as-a-service with a headless CMS and headless e-commerce for building digital products.
OneSignalHosted customer engagement service that sends push notifications, emails, in-app messages and SMS to users of web and mobile apps through an API and a dashboard.
OpensolrHosted service that runs Apache Solr search indexes for websites and apps, with a web crawler, hybrid search and a RAG API.
- Optimizely SaaS CMS
Fully managed SaaS content management system from Optimizely, with a visual editor, live preview and content delivered through Optimizely Graph's GraphQL API.
- Oracle Content Management
Cloud-based content hub from Oracle for managing content and delivering it across channels, with a REST content delivery API.
OrbHosted usage-based billing service that meters usage, rates it against pricing plans and issues invoices, with an API for sending usage events.
P
PaddleHosted merchant of record platform for software and digital products, covering checkout, subscriptions, payments and tax.
- PayPal
Hosted payment platform whose REST APIs, JavaScript SDK and server SDKs let websites and apps accept PayPal payments.
PDFShiftHosted HTML-to-PDF API that converts raw HTML or URLs into PDF documents.
PercyHosted visual testing and review service at percy.io, fed by snapshots from a command-line client.
PhraseHosted localization and translation platform that keeps source strings in a codebase and delivers translations back through an API, a CLI or an MCP server.
PineconeHosted vector database service for storing, searching and reranking embeddings through a managed API and console.
- Pipedream
Hosted integration platform whose Connect toolkit adds thousands of API integrations to an app or an AI agent.
- PlanetScale
Managed cloud database hosting for MySQL-compatible Vitess and PostgreSQL databases.
PloiHosted server management service that installs servers at cloud providers and deploys sites to them.
PMKINHosted content planner and headless CMS where teams and AI agents plan, write and review content that a website reads over an API.
POEditorHosted localization platform for managing translation projects, contributors and strings through a web app and a REST API.
PolarHosted billing platform for usage-based and subscription payments, with a public API and webhooks that a site or app calls.
PostmarkHosted transactional email service that sends application e-mail through an HTTP API and SMTP.
- Prepr
Hosted headless CMS that combines content management, personalization and A/B testing for websites.
PrismicHosted headless website builder and content management system in which developers define reusable page sections, called slices, that editors assemble into pages.
- Programmable Search Engine
Google service for creating a search engine over chosen websites, served as a Google results page or embedded in a web page.
PubNubHosted realtime platform for publish and subscribe messaging, presence, stored data and server-side logic, used through client SDKs.
PusherHosted realtime messaging API that delivers events published by a server to browser and mobile clients over WebSockets.
Q
QuintypeHosted digital experience platform for news publishers, with a headless publishing CMS, website builder, commenting and paywall tools.
R
RaygunHosted error tracking, real user monitoring and application performance monitoring service for web and mobile apps.
React BricksVisual headless CMS for React and Next.js that lets editors compose pages from components the developers define.
- Read the Docs
Hosted platform that builds, versions and publishes documentation from Git repositories, including Sphinx and MkDocs projects.
- ReadMe
Hosted developer documentation platform that publishes API references and guides, with the rdme CLI for syncing API definitions.
RecurlyHosted subscription management and recurring billing platform for subscription businesses, with an API and webhooks.
- Redis Cloud
Fully managed hosted Redis service from Redis Ltd that runs databases on public clouds.
ResendHosted email API for sending transactional and marketing email from applications, with SDKs and webhooks.
RollbarHosted error tracking service that receives errors from application SDKs, groups them and links each to the code and deploy behind it.
RunCloudHosted control panel that connects, provisions and manages the server and web application infrastructure its users run at cloud providers or on their own hardware.
S
SanityHosted content platform that pairs an open-source, React-based editing studio with a hosted real-time content database queried through GROQ or GraphQL.
ScrivitoHosted web builder with a visual editor and a headless backend and REST interface, now sold as JustRelate Web Builder.
SearchaniseHosted site search and product filter service for online stores, added to a store through platform apps and a JavaScript widget.
SearchStaxHosted service that runs managed Apache Solr search infrastructure and a site search product for websites.
- SendGrid
Hosted transactional and marketing email API and SMTP service, now offered as part of Twilio.
ServerPilotHosted server management service that sets up servers at any cloud provider and runs web apps on them.
- Sheetson
Hosted service that exposes the rows of a Google Sheet as a REST API.
ShopifyHosted commerce platform for online stores, with GraphQL Admin and Storefront APIs for headless storefronts.
- Site Search 360
Hosted site search service whose search runs on the vendor's servers and is connected to a site through a script.
- SitecoreAI
Cloud-native SaaS content management system from Sitecore, with a visual page builder, multisite management and content delivered through a GraphQL API.
- Siteleaf
Hosted content management system for static sites, with a web editor and sync to GitHub.
SnipcartHosted shopping cart and checkout that a website adds with a script, with a REST API, a JavaScript API and webhooks.
- SparkPost
Hosted email sending service with an HTTP API for transactional email, now run as part of Bird.
- Spearly CMS
Hosted content platform that runs A/B tests on website content, added to existing sites with an embed tag.
SpinalHosted git-based CMS that lets writers edit and schedule the content of a static site kept in a GitHub repository.
SpinupWPHosted control panel that connects over SSH to servers the user brings and manages WordPress sites on them.
StatsigHosted product development platform for feature flags, experiments and product analytics.
StoryblokHosted headless content management system with a visual editor, delivering content through REST and GraphQL APIs.
StripeHosted payments and billing platform, with APIs and a dashboard, operated by Stripe, LLC.
- Stytch
Hosted authentication and identity platform, with single sign-on, role-based access control and fraud protection, offered as an API and SDK service.
SuncelHeadless CMS for Next.js sites, with a visual page builder for content editors, offered as a hosted service.
SwellHosted ecommerce platform with an admin dashboard and a backend API for products, orders and checkout.
SwiftypeHosted site search service that crawls a website and returns search results and analytics, owned by Elastic.
T
TallyHosted online form builder where forms are written as text documents, with embeds for websites and an API.
TransifexHosted localization platform for software, websites and apps, with AI translation, an API, a CLI and CI/CD integration.
TransloaditHosted file upload and processing API for images, video, audio and documents, with server-side SDKs and a REST API.
TroglioTrello Power-Up that turns the cards of a Trello board into content for a website or app, published as JSON to git or a server.
turbopufferHosted vector and full-text search database built on object storage, offered as a managed cloud service.
TypeformHosted form, survey and quiz builder whose forms can be embedded in websites and web apps.
U
Umbraco HeartcoreFully managed headless CMS built on Umbraco, with a serviced backoffice and REST and GraphQL delivery APIs, hosted by Umbraco.
UniformHosted digital experience platform that combines a headless CMS, visual editing, personalization and A/B testing, and composes content from other systems.
UploadcareHosted file upload, processing and delivery platform, reached through an upload widget, an API and a CDN.
UploadThingHosted file upload service for web apps, where the app's own server authorizes each upload and the service stores the files.
- Upstash QStash
Hosted HTTP message delivery and scheduling service that calls an endpoint with retries, delays and cron schedules.
Upstash RedisManaged, serverless Redis-compatible database that Upstash runs in the cloud, with optional replication across regions.
UrlboxHosted screenshot and PDF rendering API that turns web pages and HTML into images and PDFs for other sites and apps.
Usecue CMSHosted content management system for Hugo websites that stores content in Git and publishes through instant deployments.
UsercentricsHosted consent management platform that shows consent banners on websites and apps and documents the consents given.
V
VemetricWeb and product analytics platform offered as a hosted service.
W
- Web3Forms
Hosted form backend that sends contact-form submissions from static websites to an email inbox, without server code.
WispHosted headless CMS for blogs on Next.js and React, with a hosted editor, a REST API and a JavaScript client.
- Wix Headless
Hosted headless project type from Wix that exposes Wix business APIs to a frontend the creator builds, which Wix hosts or the creator hosts.
WordPress VIPHosted enterprise platform that runs WordPress sites and Node.js applications, built on open-source WordPress.
WorkOSHosted platform of authentication, single sign-on, user management and authorization APIs for apps.
Z
- Zapier
Hosted no-code automation service that connects web apps and AI agents into workflows.
- Zenblog
Hosted headless CMS for blogs, with a hosted editor, hosted media and a TypeScript client.
Zesty.ioHosted headless and hybrid content management system with a visual manager and REST and GraphQL APIs.
Zesty.ioHosted headless and hybrid content management platform with a drag-and-drop editor, Parsley templating and REST and GraphQL APIs.
ZuploHosted API gateway service that applies authentication, rate limits, spend caps and audit to APIs, LLM calls and MCP servers.
W
WooCommerceOpen-source e-commerce plugin for WordPress.
Filtering needs JavaScript; the list above does not. Every facet value also has a page of its own, which is the same list narrowed the same way:



