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Go ORM library that maps structs to database tables, with associations, hooks, transactions and auto migrations.

Human-friendly HTTP request library for Node.js with promise and stream APIs, retries, timeouts and RFC 7234 caching.

Plugin-based command-line tool that generates typed code from a GraphQL schema and its operations.

Framework for composing REST, OpenAPI, gRPC, SOAP, database and GraphQL sources into a GraphQL federation supergraph.

A collection of npm packages for building, mocking and stitching GraphQL schemas and resolvers in JavaScript.

Fully-featured GraphQL server library for JavaScript that runs on the WHATWG Fetch API across Node.js and other JavaScript runtimes.

Zero-dependency GraphQL over WebSocket server and client library for JavaScript, with adapters for common WebSocket servers.

JavaScript implementation of the GraphQL specification, providing the parser, validator, executor and type system used to build GraphQL servers, clients and tools.

Free and open-source JavaScript table plugin that works with React, Angular, Vue and plain JavaScript.

PHP HTTP client library for sending HTTP requests and integrating with web services.

JavaScript templating engine that compiles Handlebars templates into functions that render HTML, text and other output.

JavaScript data grid that looks and feels like a spreadsheet, with versions for React, Angular and Vue.

Code generator that turns OpenAPI specifications into TypeScript clients, schemas and other generated code, published as @hey-api/openapi-ts.

JavaScript syntax highlighter with automatic language detection that runs in the browser and on Node.js.

JavaScript library that plays HTTP Live Streaming video in browsers through HTML5 video and Media Source Extensions.

JavaScript audio library for the modern web that plays sounds through the Web Audio API with an HTML5 Audio fallback.

JavaScript and TypeScript player for Lottie and dotLottie animations, built on a Rust and WebAssembly core.

JavaScript library for product tours, element highlights and feature hints on web pages.

Drop-in JavaScript Markdown editor that replaces a textarea, with a toolbar, live rendering of Markdown syntax and autosave.

Template engine for Node.js that renders markup from templates with JavaScript expressions, components and partials.

Templating language that generates HTML from plain JavaScript written inside templates, for Node.js and the browser.

PHP library that generates QR codes as PNG, WebP, SVG, EPS or binary output.

Embedded JavaScript template engine written in TypeScript that renders templates in Node, Deno and the browser.

JavaScript HTML5 canvas library for interactive objects, with SVG and JSON import and export.

JavaScript library that generates fake but realistic data for testing and development, in the browser and in Node.js.

PHP library that generates fake data for tests, database seeding and anonymized datasets.

Property-based testing framework for JavaScript and TypeScript that generates inputs to check properties of code.

JavaScript validation library that compiles an object schema into a checker function for Node.js, browsers and Deno.

JavaScript file upload library that turns file inputs into a drop area with previews, validation, image processing and uploads.

JavaScript library that positions floating elements such as tooltips, popovers and dropdowns next to their anchors, with React and Vue bindings.

JavaScript implementation of Project Fluent, a localization framework for translations with plurals, genders and grammatical cases.

A set of JavaScript libraries for internationalization built on ICU MessageFormat and the ECMA-402 Intl APIs.

An open source form library for React and React Native that holds form values, validation and submission state.

JavaScript library that draws configurable, interactive Gantt charts for the web.

Commercial JavaScript WYSIWYG HTML editor with a set of plugins, framework integrations and server SDKs.

Pure JavaScript lightbox that shows images, videos, iframes and inline content.

JavaScript and TypeScript library for creating interactive diagrams, charts and graphs in the browser or on Node.js.

Go package that validates struct and field values using struct tags.

Embeddable code editor written in JavaScript for web pages and JavaScript applications.

Object-relational mapping library for Ruby that maps classes to database tables, distributed as part of Rails.

JavaScript 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.

JSON Schema and JSON Type Definition validator for Node.js and browsers that compiles schemas into validation functions.

JavaScript library for interactive charts, maps and stock charts in web pages and web apps.

JavaScript animation library that animates CSS properties, SVG, DOM attributes and JavaScript objects.

JavaScript charting library that draws interactive charts with SVG for websites and web apps.

GraphQL client library for JavaScript that fetches, caches and modifies remote and local application data.

Authentication library for JavaScript web frameworks, with OAuth and OpenID Connect providers, email sign-in and credentials.

Zero-config, drop-in animation utility that adds transitions to a web app when elements are added, removed or moved.

Library of data structures for building collaborative applications, with a JavaScript package and a Rust core.

Test runner for Node.js with a concise API, detailed error output and concurrent test runs.

Ultra lightweight autocomplete widget for input fields, with zero dependencies.

JavaScript accessibility testing engine that checks websites and other HTML-based user interfaces inside automated tests.

Promise-based HTTP client for the browser and Node.js.

Open-source JavaScript and TypeScript 3D rendering engine for the web.

Framework-agnostic authentication and authorization framework for TypeScript.

Block-based rich text editor for React applications.

Python library for interactive plots and data applications that render in web browsers.

PHP library that extends DateTime with an API for creating, changing and formatting dates.

JavaScript authorization library that defines what a given user may access, for browsers and Node.js.

Assertion library for Node.js and the browser that pairs with any JavaScript test framework.

JavaScript charting library that draws charts on an HTML5 canvas.

JavaScript library that draws responsive charts as SVG, styled with CSS.

Vanilla JavaScript select box and text input plugin with configurable options and no jQuery dependency.

Validation library for TypeScript and JavaScript classes that checks object properties against rules declared with decorators.

End-to-end testing framework that writes tests as user actions and runs them through Playwright, WebDriver, Puppeteer or Appium.

Type-safe form validation library that progressively enhances HTML forms, with React bindings and support for Remix and Next.js.

TypeScript implementation of Connect, a family of libraries for building type-safe APIs from Protocol Buffers schemas.

JavaScript image cropper, built as a series of web components.

End-to-end and component testing framework that runs tests in a real browser.

JavaScript library of functions for manipulating dates in browsers and on Node.js.

JavaScript library that parses, validates, manipulates and displays dates and times, with a largely Moment.js-compatible API.

Authentication solution for Rails based on Warden, with modules for sign-in, registration, confirmation, password recovery and account locking.

Wrapper library for IndexedDB, the standard database in the browser, for offline-first web applications.

JavaScript Gantt chart component for project scheduling, timelines and task dependencies.

Safe, extensible ORM and query builder for Rust.

Integrated set of Django applications for local and social account authentication, registration and account management.

Drag and drop toolkit for the web, with a framework-agnostic core and adapters for React, Vue, Svelte and Solid.

PHP database abstraction layer with an object-oriented API for queries and for schema introspection and management.

PHP object-relational mapper that provides transparent persistence for PHP objects.

DOM-based XSS sanitizer that cleans HTML, MathML and SVG markup in the browser or on Node.js.

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.

SQL query builder, Active Record ORM and migrations library for AdonisJS applications.

Open-source proof-of-work CAPTCHA widget and server verification libraries, with a paid self-hosted server (Sentinel) and a hosted service (Cloud).

Application performance monitoring system for distributed systems, microservices and container-based architectures.

Open-source consent manager that renders cookie banners, a preferences dialog and consent-gated scripts for JavaScript frameworks.

Self-hosted web comment engine that adds threaded comments, voting and moderation to web pages through an embedded widget.

Open source Node.js server that handles OAuth and streams files from remote sources such as Google Drive and Dropbox into uploads made with Uppy.

Open-source reactive database and backend for web apps, with server functions written in TypeScript and a cloud platform run by the maker.

Self-hosted analytics and engagement server that collects data from web, mobile and desktop applications and shows it in dashboards.

Error and log reporting service with a self-hostable server, a web dashboard and client libraries for .NET and JavaScript.

Open source application for querying, visualizing, alerting on and exploring metrics, logs and traces.

Horizontally scalable log aggregation system that indexes log labels rather than the text of log lines.

Open-core feature flagging, experimentation and product analytics platform, available self-hosted or as a cloud service, with SDKs for application code.

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.

Open-source GraphQL server that generates a GraphQL API over existing databases and other data sources, with a hosted Hasura Cloud edition.

Open-source user infrastructure platform for authentication, teams, payments, email and analytics, with a managed cloud and a self-hostable server.

WebSocket backend for Yjs documents that syncs changes between clients in real time, from the team behind Tiptap.

Self-hosted system for building agents that watch the web and incoming events and take automated actions on the user's behalf.

Open-source payments orchestration platform that routes transactions across payment processors, with a vault, a control center and reconciliation, self-hosted or hosted by Juspay.

Open-source platform for managing application secrets, certificates and cryptographic keys, with a CLI, SDKs and a self-hostable server alongside Infisical Cloud.

Workflow 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.

Privacy-friendly web analytics tool that a site owner deploys to their own Cloudflare account and embeds with a small script.

Open-source backend for web and mobile apps with a client-side, real-time database, auth, permissions, storage and streams.

Image optimizer that serves images in any size and format from a URL, using sharp for raster images and svgo for SVG.

Open-source distributed tracing platform that collects, stores and shows traces from requests that cross services.

Open-source orchestration platform for data, AI and infrastructure workflows, defined in YAML and run on a server with a web UI.

Open-source backend server with a pre-built API, realtime notifications and data storage for web, mobile and IoT applications.

Open-source platform for tracing, evaluating and monitoring LLM applications, sent from application code through SDKs and OpenTelemetry.

Open-source survey platform for creating surveys that respondents take through a link or an embed on a website.

Config-first web framework that builds business apps and internal tools from YAML configuration, served by a Node.js server.

Workflow automation platform for building AI agents and workflows on a visual canvas, self-hosted or in the cloud.

Messaging server that routes messages between applications and services by subject, with optional persistence through JetStream.

Browser-based flow editor and Node.js runtime for building event-driven applications that connect devices, services and data.

Open-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.

Self-hostable HTTP publish-subscribe server that delivers published messages as push notifications to phones, desktops and browsers.

Open source web analytics framework that records visits to websites and applications and reports on them, with a JavaScript tracker and a PHP server.

Open-source usage metering and billing platform that ingests usage events and bills customers for the usage.

OpenID Certified OAuth 2.0 and OpenID Connect server that issues tokens and connects to an existing login and consent app.

Open 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.

Open source website analytics tool that uses no cookies, offered as a managed service on poeticmetric.com or self-hosted with Docker Compose.

Standalone web server that serves a RESTful API directly from a PostgreSQL database schema.

Product analytics platform with session replay, feature flags, experiments, error tracking and surveys, self-hosted from its code or run as PostHog Cloud.

Python workflow orchestration framework that runs flows on schedules, events or API calls, with a self-hostable server.

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.

Open-source observability platform built on OpenTelemetry that covers logs, metrics, traces, alerts and dashboards.

Library that enables low-latency, bidirectional and event-based communication between a client and a server.

Self-hosted realtime server written in Rust that serves Pusher-compatible WebSocket and HTTP APIs.

Open-core PDF editing and processing platform for self-hosted servers and a hosted service, with a REST API.

Open source user authentication server, Core, with frontend and backend SDKs, self-hosted or as a managed cloud service.

Open-source JavaScript form library that renders JSON-defined forms and surveys in React, Angular, Vue and plain JavaScript applications.

Open source webhook service that sends webhooks with retries, signatures and a customer-facing portal, self-hosted or as a hosted service.

Open-source durable execution platform whose server runs workflows and retries failed steps, self-hosted or as Temporal Cloud.

Open-source low-code platform for building internal tools and dashboards on existing databases and APIs, self-hosted or as ToolJet Cloud.

Self-hosted web analytics that runs on Cloudflare Workers, Durable Objects, D1 and R2 in the site owner's own Cloudflare account.

Open-source platform for building durable AI agents and background tasks in TypeScript, offered as a cloud service and for self-hosting.

Open-source user onboarding platform for in-app product tours, checklists and surveys.

Time series database and monitoring solution that stores metrics pushed by applications and agents, with a Prometheus-compatible query API.

Sync engine that keeps a client-side datastore of a web app in step with a Postgres database.

Workflow automation platform with a self-hostable server and an embeddable builder that a SaaS product can place inside its own app.

Open source low-code platform for building internal tools, admin panels and dashboards.

Open-source authentication and authorization server and portal that adds multi-factor authentication and single sign-on in front of web applications.

Error monitoring and performance monitoring service for mobile, web, desktop and server applications, offered as a hosted platform and as an on-premises installation.

Dashboard UI for Bull and BullMQ job queues, mounted into an existing Node server or run as a standalone CLI or Docker image.

Document generator that fills Word, Excel, OpenDocument and PowerPoint templates with JSON data and exports PDF and other formats.

Open-source identity and access management and single sign-on platform with a web admin console.

Open-source distributed storage system that serves object, block and file interfaces from one cluster built on commodity hardware.

Web-based administration tool for Unix-like servers that configures system files and server applications such as Apache HTTP Server, BIND and MySQL.

Open-source platform for running many PostgreSQL instances on Kubernetes, with copy-on-write branching and scale-to-zero.

Java-native API gateway for HTTP, Dubbo, gRPC and WebSocket services, with plugins for authentication, traffic control and observability.

Java servlet and JSP container, an open source implementation of the Jakarta Servlet, Pages, Expression Language, WebSocket, Annotations and Authentication specifications.

Proprietary relational database management system from Microsoft, with Express, Standard and Enterprise editions.

Command-line tool that installs a project's dev tools, sets its environment variables and runs its tasks from one mise.toml file.

Document database server built on the document model, offered as a community edition and as commercial Enterprise editions.

Native graph database server that stores nodes and relationships and is queried with the Cypher language.

Web admin interface for managing Nginx reverse proxy hosts, distributed as a Docker image with free Let's Encrypt certificates.

POSIX shell script that installs and switches between multiple Node.js versions for one user.

Go reverse proxy that adds OAuth 2.0 and OpenID Connect authentication in front of web applications.

Commercial relational database from Oracle, with a free developer edition and fully supported paid editions.

Open-source administration and development tool for PostgreSQL, run as a desktop application or as a web application.

PostgreSQL connection pooler, load balancer and database sharder written in Rust.

Embeddable WebAssembly build of PostgreSQL, packaged as a TypeScript and JavaScript library for the browser, Node.js, Bun and Deno.

FastCGI process manager for PHP, built as an optional SAPI in the PHP source tree.

Proprietary hosting control panel for managing websites, DNS, mail and other services on Linux and Windows servers.

Process manager for Node.js and Bun applications that keeps them running, with a built-in load balancer.

Shell-based version manager that switches between multiple installed Python versions.

Distributed key/value store, an independent LGPL-licensed fork of Redis.

S3-compatible distributed object storage server written in Rust.

Distributed file system and S3-compatible object store, written in Go, shipped as one weed binary.

Public-domain C library that implements a self-contained SQL database engine in a single file.

Multi-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.

Open-source distributed SQL database, MySQL compatible, that supports hybrid transactional and analytical workloads.

Embedded SQL database engine written in Rust that is compatible with SQLite, with a hosted service beside it.

Cloud-native, horizontally scalable distributed database system built around MySQL.

Hosting control panel for running websites, email, databases and backups across one or more Linux servers in a single cluster.

Open source edge and service proxy for cloud-native applications.

Server control panel for creating and managing websites, email accounts, databases, SSL certificates and backups on a Linux server.

Reverse proxy that exposes services behind a NAT or firewall to the internet through a server with a public IP address, written in Go.

S3-compatible object storage server for self-hosted, geo-distributed deployments, written in Rust.

Web control panel for Debian and Ubuntu servers that manages web domains, mail, DNS zones and databases from one dashboard.

Open source web server for Unix-like systems, focused on security and a small footprint, with CGI, FastCGI and reverse proxy support.

Open source hosting control panel for managing websites, MySQL databases and cron jobs on Linux servers from a web browser.

Multithreaded, Redis-compatible key-value database and cache server, a fork of Redis.

Free server control panel for Ubuntu and Debian that manages domains, email mailboxes, FTP users and MySQL databases.

Open source API gateway, built on NGINX, that routes, secures and transforms traffic to APIs through plugins, with a Kong Konnect SaaS option.

ACME client and library written in Go that obtains, renews and revokes TLS certificates from Let's Encrypt and other ACME servers.

Web server from LiteSpeed Technologies, sold under paid licenses, that reads Apache configuration files and includes a WebAdmin console.

Offline search theme for Docusaurus v2 and v3 that indexes the docs and blog locally, with no external search service.

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.

ACME protocol client written in POSIX shell that issues, installs and renews TLS certificates from ACME certificate authorities.

Database management tool written in PHP that is distributed as a single file and built on Adminer.

Open-source API gateway for routing, securing and managing traffic to APIs, microservices and LLM providers, built on NGINX and etcd.

Open-source web server for modern operating systems, extended by loadable modules.

Multi-model database for documents, graphs and key-value data, queried with the AQL query language.

Command-line version manager for language runtimes and developer tools, configured per project in a .tool-versions file.

PostCSS plugin that parses CSS and adds vendor prefixes to rules, using browser support data from Can I Use.

JavaScript compiler that rewrites next-generation JavaScript into code that runs in the browsers and runtimes a project targets.

Visual regression testing tool that captures screenshots of a web app over time and compares them against approved references.

Build plugin that inlines a page's critical CSS and lazy-loads the rest of its stylesheets.

Bundler that lets browser code use Node.js-style require() calls to load npm modules into a single script.

Fast all-in-one JavaScript and TypeScript runtime that also ships a package manager, test runner and bundler as one executable.

Self-hosted platform as a service that deploys apps and one-click services to Docker containers behind nginx with automatic HTTPS.

Kubernetes controller that issues and renews X.509 TLS certificates for workloads in a Kubernetes or OpenShift cluster.

Column-oriented SQL database management system for analytical queries, available as open-source server software and as a cloud service.

Distributed SQL database that runs as a cluster of nodes and keeps its data replicated across them.

Linux control panel for managing web hosting, websites and servers on dedicated servers and VPS, with a free core and a paid CWPpro edition.

Vanilla JavaScript consent management library that shows a cookie banner and blocks scripts until visitors consent.

Open-source, self-hostable platform that deploys applications, databases and services to Docker containers on the user's own servers.

Proprietary web hosting control panel and server management software, sold as cPanel & WHM licenses for servers that host websites.

Modular CSS minifier, built on the PostCSS ecosystem, that compresses stylesheets with a set of optimizations and presets.

Desktop database management tool and SQL client for many SQL and NoSQL databases, with a free community edition.

Proprietary web hosting control panel for managing websites, email, DNS and databases on Linux servers, with a paid license per server.

Desktop application that installs the Docker Engine, Docker CLI and Docker Compose on macOS, Windows and Linux for building and running containers.

Free search program from Algolia that crawls documentation into an Algolia index and provides a search box for it through open source frontend packages.

Self-hosted platform as a service that runs on a single Linux server and deploys web apps pushed to it with git.

Analytical SQL database that runs in-process inside Python, Node.js and other applications, with a WebAssembly build for browsers.

Self-hosted server management panel that deploys apps, databases and templated services on servers the user runs, using Docker.

JavaScript carousel library with fluid motion, swipe gestures and a plugin system, usable with React, Vue, Svelte, Solid or plain JavaScript.

Node.js module that generates favicons and their associated icon and web app manifest files from a source image.

Java enterprise search server with a built-in crawler, an admin console and a search UI, built on OpenSearch.

Full-text search library for browsers and Node.js that keeps its index in memory or in a database.

Icon set of familiar icons from Microsoft, shipped as SVG files and as native Android, iOS and Flutter libraries.

Native 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.

Lightweight fuzzy-search library written in TypeScript, with no dependencies, for searching in browsers and on servers.

JavaScript library that fuzzy-matches search text against strings and object properties, with scores and highlighting.

Vite-based tool that builds interactive story books of components for Vue, React and Svelte.

Open source JavaScript UI library of widgets that builds a search interface on Algolia's search API, with React and Vue wrappers.

Component workshop that runs React component stories in a Vite dev server and builds them into a static app.

Docker Compose setup and CLI that starts a pre-configured local stack of PHP, web server and service containers for PHP projects.

Desktop 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.

Vite plugin that configures Vite for use with a Laravel backend server.

Open-source local PHP development environment for Linux and macOS that runs sites, PHP versions and services as rootless Podman containers.

Backwards-compatible language extension for CSS that compiles Less stylesheets to plain CSS with Node.js or in the browser.

Open-source automated tool that audits web pages and web apps for performance, accessibility, SEO and best practices.

CSS parser, transformer, bundler and minifier written in Rust, usable from JavaScript, Rust or a standalone CLI.

Free desktop application for developing WordPress sites on the developer's own computer.

Local 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.

JavaScript bundler for React Native projects, with a development server and a build API.

Vector database for storing and searching embeddings, run as a Docker or Kubernetes server or as Milvus Lite, a Python library.

Monorepo task runner and build system for TypeScript and polyglot codebases, with caching and affected-only runs.

Search library for full-text, vector and hybrid search that runs in the browser, on a server or at the edge.

Design environment that renders JSX from a team's own component library across themes and screen sizes.

Design system of Web Components with npm wrapper packages for React, Angular, Vue and vanilla JavaScript, published by Porsche AG.

Tool for transforming CSS with JavaScript plugins.

UI component library for Angular, distributed as the npm package primeng.

React UI component library made by PrimeTek, published on npm.

Vue UI component library made by PrimeTek, published on npm.

Vector search engine and vector database, run as a server with a REST and gRPC API, also offered as Qdrant Cloud.

Set of 15×15 icons that ships as individual React components on npm.

Unstyled, accessible React component primitives for building design systems and web apps.

Pre-styled, open-source component library designed to work out of the box with minimal configuration.

Unstyled, accessible React components and hooks from Adobe for building custom UI, published as react-aria-components.

Bootstrap components rebuilt as React components, installed from npm alongside the Bootstrap stylesheet.

Sandbox for developing and testing React UI components in isolation, with file-based fixtures, a playground interface and a static export.

Implementation of React Native's components and APIs for the web, rendering through React DOM.

React component library implementing Adobe's Spectrum design system, with accessible and adaptive components.

React component library of UI components, published as the rsuite npm package.

JavaScript and TypeScript bundler written in Rust with a Rollup-compatible API, designed as the bundler of Vite.

Build tool for modern web applications that runs on Rspack and supports React, Vue, Svelte and other frameworks.

Fast Rust-based bundler for the web with a modernized webpack API.

React component library and design system from Sanity, with layout primitives and theme tokens for building accessible web apps.

Drupal module that provides a framework for creating searches on Drupal entities, backed by a search server or Drupal's own database.

Design system from Daangn that delivers one set of design tokens to React, Lynx and CSS packages.

React component library and design system from the Douyin front-end team, with themes built on design tokens.

Svelte port of shadcn/ui, with components that a CLI copies into a project's source code.

Go and templ components whose source code is added to a project with a CLI, so the project can customize it.

Vue components whose source code is added to a project with a CLI, so the project can customize it.

Node.js module that resizes and converts JPEG, PNG, WebP, AVIF and other image formats, using the libvips image library.

Open-source design system of web components for industrial software interfaces, with packages for React, Vue and Angular.

Icon set of SVG logos for popular brands, published as an npm and Composer package.

Svelte component package of the Skeleton design system, which is built on Tailwind CSS.

Schema-less search backend server written in Rust that indexes words against identifiers.

Accessible UI primitives for Angular, with the behavior installed from npm and the styled components copied into the project.

Web components implementing Adobe's Spectrum design system, open source and usable with any web framework or none.

Build system that exports design tokens defined once in JSON or JavaScript to platform formats such as CSS, iOS, Android and JavaScript.

Styling library for React that writes component styles as CSS in tagged template literals.

Babel plugin and runtime that transpile CSS written in style tags inside JSX components into class names scoped to that component.

CSS linter that reports errors and enforces conventions in stylesheets, with rules, plugins and shareable configs.

JavaScript styling library whose build-time compiler turns style definitions into atomic CSS class names.

Svelte component library of form controls, popups, notifications and other UI elements, published as @svar-ui/svelte-core.

Node.js library and command-line application that optimizes SVG files by removing redundant information, with a browser bundle and a webpack loader.

Rust-based platform that compiles, bundles and minifies JavaScript and TypeScript, with npm packages for its JavaScript APIs.

Symfony component that maps asset directories to versioned public files and loads JavaScript through browser importmaps, without a bundler.

Free and open source HTML dashboard UI kit built on Bootstrap 5, with layouts and components for admin panels and web apps.

Set of free, MIT-licensed SVG icons on a 24x24 grid, published as npm packages for plain HTML and for several frameworks.

First-class variant API for Tailwind CSS that defines typed component recipes with variants, slots and compound styles.

Utility function that merges Tailwind CSS classes in JavaScript so that conflicting classes resolve without style conflicts.

Suite of more than 80 Blade components for TALL Stack applications built with Laravel, Livewire, Alpine.js and Tailwind CSS.

Universal styling and UI component library for React and React Native, with an optimizing compiler for web and native.

React component library for the TDesign design system, published as the tdesign-react npm package.

JavaScript minifier and compressor for ES6+ code, used from the command line or through the Node.js API.

Bundler for TypeScript and JavaScript libraries that emits ESM, CJS, IIFE or UMD bundles and declaration files, built on Rolldown.

JavaScript framework from Hotwire that updates server-rendered web applications by sending HTML over the wire.

Build system written in Rust that runs the package.json scripts of JavaScript and TypeScript monorepos with caching and parallel execution.

Compiler that turns Tailwind-style utility classes into CSS at runtime in the browser or in JavaScript environments, without a build step.

Python framework for semantic search, LLM pipelines and workflows, with an embeddings database, a web API and Docker images.

Programming language that adds static types to JavaScript, with a compiler (tsc) that converts its code to JavaScript.

JavaScript adapter that connects InstantSearch.js and its React, Vue and Angular bindings to a Typesense search server.

Public domain library of user interface components, CSS, JavaScript and a visual style guide designed for U.S. federal government websites.

JavaScript fuzzy search library that matches a short search phrase against a list of phrases without building an index.

Micro HTML and SVG renderer for building reactive web pages with template literals.

JavaScript and CSS library that makes links, forms and server-rendered HTML pages update fragments without a full page load.

Set of web components for business web applications, published by Vaadin as one npm package per component.

Build-time CSS tool that lets styles be written in TypeScript, with locally scoped class names and CSS variables.

Vue component library for mobile web apps, written in TypeScript.

Command-line interface of the Vercel hosting platform, used to deploy projects, run them locally and manage them from a terminal.

React component library and design system from monday.com, with styles, tokens and guidelines for application development.

Language tooling for Vue single-file components, with the Vue (Official) VS Code extension, a language server and the vue-tsc type checker.

Open source UI component framework for Vue, distributed as the vuetify npm package.

Headless Vue components and composables with no styling, distributed as the @vuetify/v0 npm package.

Command-line tool that builds Rust crates into WebAssembly packages for JavaScript, with npm publishing support.

Library of framework-agnostic web components with CSS styling, from the team behind Font Awesome.

ASP.NET Core middleware that bundles and minifies CSS and JavaScript files at runtime and keeps the output in memory.

Free distribution of Apache, MariaDB, PHP and Perl for setting up a local development server on Windows, Linux and macOS.

React component library with a design system of accessible components, styling and theming.

Headless, accessible UI primitives for Angular that ship without styles.

Icon library and toolkit distributed as web fonts, SVG and CSS, with free icon styles and paid Pro styles.

Open-source framework for building mobile, desktop and web apps with native-looking UI components.

CSS-in-JS library whose styled API is inspired by emotion.

CSS-in-JS library that defines styles as JavaScript objects and can compile them ahead of time.

Set of free, MIT-licensed SVG icons for user interface development, with React and Vue packages.

Open-source component library for React web and React Native applications, built on React Aria Components and Tailwind CSS.

Unified icon framework that loads open source icons from any icon library on demand.

Open source SVG icon set with packages for React, React Native, Vue, Flutter and CSS.

Design system from Bentley Systems with a React component library, CSS and design-token packages.

JavaScript library that simplifies HTML document traversal and manipulation, event handling, animation and Ajax.

Commercial JavaScript UI component library for jQuery, with an open-source Kendo UI Core subset.

UI toolkit of unstyled, accessible components and primitives for building web apps with SolidJS.

Open-source collection of React components built with Tailwind CSS, Motion and shadcn/ui, installed into a project as source code.

Cloudflare's component library of accessible React UI components for building web applications, built on Base UI.

UI framework for building custom elements (web components) with HTML, JavaScript and CSS, maintained by Salesforce.

Zero-runtime CSS-in-JS library that extracts styles written in JavaScript into CSS files at build time.

React component library for building AI chat and generated-content web apps.

React component library with hooks and a theming system, installed from npm as @mantine/core and related packages.

Virtual CSS language with enhanced syntax that generates styles from class names written in HTML and JavaScript.

React component library that implements Google's Material Design.

Web components for the Material 3 design system, installed from the @material/web npm package.

Vue 3 component library written in TypeScript, with a theme system configured through JavaScript theme overrides.

Angular UI component library based on Ant Design.

Vue component library built on Reka UI and Tailwind CSS, used as a Nuxt module or as a Vite plugin in plain Vue apps.

Set of SVG icons built by GitHub, with helper packages for JavaScript, React and Ruby.

Styling engine that generates atomic CSS at build time from type-safe TypeScript style definitions.

Shadcn-style HEEx component library for Phoenix LiveView apps, styled with Tailwind CSS and installed from Hex.

Open-source icon family of SVG icons in six weights, with packages for the web, React, Vue and other frameworks.

Library of animated React and Tailwind CSS components, blocks and templates that users copy into their own projects.

Material Design UI components for Angular applications, built by the Angular team.

Enterprise-class UI design language and React component library.

UI component library of essential UI blocks for building mobile web apps.

Apache Struts is an open-source MVC framework for building Java web applications.

Component-based Java web framework that keeps behavior in Java classes and markup in plain HTML.

React UI components library based on the Arco Design system.

Vue UI component library, based on the Arco Design system, distributed as an npm package.

Open-source React library of unstyled, accessible UI primitives and components for building web apps and design systems.

Open-source TypeScript and React library of components for building AI chat interfaces.

Open source React design system built on StyleX, with themes and a command-line tool.

Micro-library for building web components with functions and hooks.

Unstyled React component library for building accessible user interfaces.

Component library built with Tailwind CSS that works with any web stack.

Headless, unstyled Svelte component primitives for building accessible component libraries.

Web UI framework for building interactive web apps with C# and Razor components, shipped as part of ASP.NET Core.

Vue 3 component library that implements Bootstrap 5 components with TypeScript types and WAI-ARIA markup.

Svelte component library implementing IBM's open source Carbon Design System.

Small jQuery-style library for DOM manipulation in modern browsers.

Open source design system of guidelines, React components and design resources for building web applications.

Compile-time CSS-in-JS library for React that writes its styles out as atomic CSS.

Proprietary enterprise content management system and digital experience platform, offered as a hybrid headless CMS.

Python web framework for data-centric applications built on an explicit schema, with a query language and components called cubes.

A TypeScript library for building type-safe, variant-driven class names with Tailwind CSS or any other styling approach.

Rust framework for building fullstack web, desktop and mobile apps from one codebase.

Toolkit for building Web APIs on Django, with serialization, views, authentication and permissions.

Go web framework built on the standard net/http package, with a radix-tree router, request binding, middleware and centralized error handling.

Eclipse's implementation of the Jakarta Faces specification for building Java web user interfaces.

UI component library for Vue 3, written in TypeScript.

CSS-in-JS library for writing styles with JavaScript, with packages for React and for other frameworks.

Express-inspired web framework for Go, built on Fasthttp.

Python and JavaScript low-code web framework for building data-driven web applications, with a built-in admin interface, roles and permissions.

Go web framework with a Martini-like API for building web services, REST APIs and web applications.

Go web and RPC framework with code generation from API definitions, built-in resilience components and the goctl command-line tool.

Go UI component library of templ components for server-rendered web applications.

Python package for building web interfaces and demos for machine learning models and Python functions.

Open-source e-commerce platform built on ASP.NET Core and MongoDB, with multi-store and multi-vendor support.

Elixir full-stack web framework whose client-side code runs in the browser as Elixir, compiled to JavaScript.

Scala library for typeful, functional and streaming HTTP servers and clients, built on FS2 and cats-effect.

Go framework for building HTTP and gRPC microservices, with application lifecycle, generated transports, middleware and configuration.

Kotlin framework for building asynchronous servers and HTTP clients, extended with plugins and engines.

Rust framework for building reactive web applications, client-side or full-stack with server rendering and server functions.

JVM application framework for Java, Kotlin and Groovy with compile-time dependency injection, AOP and HTTP servers and clients.

Commercial publishing and blogging system from Six Apart that publishes static pages, dynamic pages or both from templates.

Java network application framework for building protocol servers and clients with an asynchronous, event-driven model.

OCaml framework for building client and server web and mobile applications as a single program.

Suite of web-based open source business apps, including a website builder and an e-commerce app.

Commercial .NET content management system from Optimizely, installed from NuGet packages on Microsoft SQL Server.

Java EE application framework from Oracle for building enterprise applications in JDeveloper and running them on an application server with the ADF runtime installed.

Java and Scala web framework whose production build is a distribution that runs as a server process, with Twirl templates.

Commercial .NET content management and digital experience platform from Progress, offered on-premises or as a cloud service.

Java framework for building cloud-native applications that run on the JVM or as native executables.

Web application environment for Common Lisp, for personal websites and deployable applications.

Python library for building full-stack web apps, with the frontend compiled to React and the backend run as a Python server.

Async web framework for Rust with typed routes, request guards and built-in form and JSON handling.

Asynchronous Python web framework with its own production-ready web server.

Services framework for .NET that builds HTTP and message-based web services from typed request DTOs.

Ruby DSL for building web applications with a small set of route definitions, run on a Rack server.

Commercial content management and digital experience platform from Sitecore, sold as an on-premises product and a cloud product.

Open-source commerce platform built on Ruby on Rails, with a REST API, TypeScript SDKs and a Next.js storefront.

Comprehensive programming and configuration model for Java-based enterprise applications, on any deployment platform.

Lightweight ASGI framework and toolkit for building async web services in Python.

Python framework that turns scripts into interactive web apps for data work.

Rust framework that renders full-stack web apps as HTML on the server, with client reactivity compiled from the same Rust code.

Python web framework and asynchronous networking library that runs its own HTTP server rather than WSGI.

Server-side Swift HTTP web framework for building backends, web apps, APIs and HTTP servers.

Low-code platform for building web and hybrid mobile applications, offered as a cloud service and as an on-premise installation.

Content management and digital experience platform for .NET web applications, with marketing and commerce features.

Rust framework for building client-side web applications that run as WebAssembly in the browser.

Rust web framework for building HTTP servers and web applications, with routing, middleware, WebSocket support and an async runtime.

Asynchronous HTTP client and server library for Python, built on asyncio, with a web server and a client session API.

Java content management system for websites, intranets and portals, published under the Apache License.

Java suite of enterprise business applications for ERP, CRM and e-commerce, built on an entity engine, a service engine and a widget-based UI.

Rust HTTP routing and request-handling library focused on ergonomics and modularity.

Content management system for Ruby on Rails, distributed as a gem and run inside a Rails application.

Online shop software from JTL-Software-GmbH, written in PHP.

E-commerce plugin for the Grav CMS that adds a catalog, checkout, payments, shipping and customer accounts.

Git-based headless CMS for Next.js that stores every entry as a JSON file in the project repository.

Self-hostable server for storage, search, sharing and sync of Atomic Data, with a web app and a RESTful API.

Static site generator in which each site is a Janet program that declares its data and its output files.

Static site generator written in Bash that builds a website from Markdown posts and pages.

Open-source platform for building data-driven web applications, with a GraphQL API, PostgreSQL and a React administration interface.

Git-based content management interface, delivered as a single-page admin app, that edits the content files of a static site.

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.

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.

Open-source TypeScript e-commerce platform built on Node.js and PostgreSQL, with a GraphQL API and React storefront and admin.

Static site generator that builds a website from a folder of audio files, for audio producers.

Plugin-first CMS with a Go backend, a React admin built on the Gutenberg block editor and optional Astro themes, backed by PostgreSQL.

Open-source web builder framework that adds a visual editor for HTML templates to an application.

Static site generator written in Nim that builds a site from Markdown contents and Mustache templates.

Wiki compiler that builds wiki pages into a static website, storing page history in a revision control system, with blogging support.

Python static site generator that uses Jinja2 templates and Markdown, with blog and tag index support.

Content management tool that edits Markdown, YAML and JSON files in a codebase, through the local file system or GitHub.

Content management system written in PHP that runs on MySQL or MariaDB and is installed by uploading its package to a web space.

Self-hosted ecommerce platform whose Go backend, GoCommerce, serves the API and an admin panel for a separate SvelteKit storefront.

Magnolia is a Java digital experience platform for managing and delivering web content, with a Community Edition under GPLv3 and a licensed DX Core.

Markdown-based static site generator for blogs and websites, written in Zig.

Documentation framework on top of MkDocs that builds static documentation sites from Markdown.

Open-source headless platform for building multi-vendor marketplaces, built on the Medusa commerce core.

Self-hosted content management system for podcasts, blogs, photos, documents and links, running on Cloudflare Workers with D1 and R2 storage.

Dependency-aware command-line build tool and template language that generates websites from HTML, content and data files.

Spreadsheet-style interface for building online databases on SQLite, PostgreSQL or an existing database, self-hosted with Docker or offered as NocoDB Cloud.

File-based content module for Nuxt that queries Markdown, YAML, CSV and JSON files from a Vue application.

Haskell library and command-line tool that converts documents between markup formats.

Book-publishing system written in Racket that embeds code in text documents for multiple-output publishing.

Open-source visual editor library for React that lets users build drag-and-drop pages from the components an app defines.

Static site and blog generator written in OCaml that compiles XML documents, with Markdown sources through a plugin.

Git-based headless CMS, a single-page admin interface for editing content stored in a Git repository of a static site.

Content layer library that turns Markdown, MDX, YAML and JSON files into typed data for a JavaScript or TypeScript application.

Command-line toolkit that builds websites and web apps from XML with XSLT stylesheets.

Static site generator written in Go that renders Markdown and HTML pages through a shared layout.

Static site generator written in Go that builds Markdown and HTML files into a site, with plugins, hooks and routes.

JavaScript framework that adds reactive behavior to HTML through attributes written in the markup.

TypeScript web framework for building backend servers, optimized for Bun and also runnable on Node.js.

File-based router for universal React Native apps that run on Android, iOS and the web, part of the open-source Expo platform.

Node.js web framework for building HTTP APIs and web applications, with a plugin architecture and schema-based validation.

JavaScript toolkit that automates build and workflow tasks by composing single-purpose tasks and plugins into streaming pipelines defined in a gulpfile.

HTTP server framework for JavaScript runtimes, built on the Request, Response and Headers primitives of the web platform.

Minimal Jekyll clone for Node.js that builds a site from Jekyll-style folders with Mold templates.

Dependency-free browser library that lets HTML attributes make AJAX requests, use CSS transitions, WebSockets and Server-Sent Events.

Documentation generator that builds HTML API documentation from comments placed in JavaScript source code.

JavaScript library for building web components with reactive properties and declarative HTML templates.

HTML-based language and runtime for building web applications and user interfaces, with the Marko Run application framework.

TypeScript framework for building AI agents and applications.

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.

JavaScript library for building component-based user interfaces on a virtual DOM, with a React-compatible API through an optional alias.

Desktop CMS for Windows, macOS and Linux that builds static websites on the author's computer.

Vue.js framework with UI components and a CLI that builds single-page, server-rendered, static, PWA, mobile, desktop and browser extension apps.

Framework for web apps that resumes on the client instead of hydrating, with Qwik City for routing and server rendering.

JavaScript library for building component-based user interfaces for the web, with react-dom for browsers and server rendering.

Full-stack web framework built on Web APIs that combines routing, data, UI and asset compilation in one stack.

Open-source HTML presentation framework for building slide decks that run in a web browser.

Static site generator built on Rsbuild that turns Markdown and MDX files into documentation websites.

Open-source API reference renderer that turns OpenAPI and AsyncAPI documents into interactive API documentation.

Markdown-based slides maker and presenter that builds slide decks as web pages with Vue and Vite.

Full-stack application framework for Solid, built on Vite.

Toolchain that compiles TypeScript components into web components, distributable as custom elements, framework wrappers or prerendered websites.

Compiler that turns Svelte components into JavaScript that updates the DOM directly, used to build web applications.

Full-stack framework for React and Solid, powered by TanStack Router, for server-rendered, static and client-only web apps.

Express-like web framework for Node.js, written in TypeScript and published as native ESM.

JavaScript toolkit for composing full stack applications and frameworks from Vite and Nitro primitives.

Documentation framework that builds Markdown and MDX sources into docs sites, powered by Vite.

JavaScript framework for building user interfaces on the web, with a reactive rendering system and optional server rendering.

Backend framework for TypeScript and Go in which application code declares the infrastructure it uses, such as databases, Pub/Sub and cron jobs.

TypeScript framework for building server-side Node.js applications, with dependency injection and an Express adapter.

React documentation framework that composes into an existing React framework to build docs sites.

Commercial administration panel package for Laravel applications.

PHP microframework built on PSR-15 middleware, in which the application chooses its routing and templating.

Static site generator that builds websites from React JSX components with Vite.

Full-stack PHP web framework delivered as a PHP extension.

Symfony-based content management system for websites, with Markdown or database content and an optional static export.

WordPress plugin that crawls a WordPress site into a static copy and publishes that copy to static hosting.

Drupal module that generates static HTML from a Drupal site and keeps its content as files.

Asynchronous, event-driven PHP framework for building network servers that handle HTTP, WebSocket and custom socket protocols.

Drupal distribution of modules and configuration for building low-code websites on the Acquia platform.

Web-based database management tool distributed as a single PHP file.

TypeScript-first Node.js web framework for web apps and API servers, with ORM, validation, mail and queues in the core distribution.

Full-stack meta-framework for building Angular applications and websites, with Vite builds and Nitro server integrations.

JavaScript library for interactive charts and data visualization that runs in the browser.

Open-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.

Open-source backend platform with authentication, databases, storage, functions and messaging, available as Appwrite Cloud or self-hosted with Docker.

Cross-platform, open-source framework for building web apps and services with .NET and C#.

Self-hosted, open source identity provider with OIDC, SAML, LDAP and proxy authentication.

Open-source PHP content management system built on CakePHP for building and customizing websites, with a REST API.

Toolchain for web projects with a formatter and a linter, usable from the command line and through a language server.

HTML, CSS and JavaScript toolkit for developing responsive, mobile-first projects on the web.

Open-source content management system for teams, written in PHP, with a built-in REST API and a MySQL or MariaDB database.

Commercial eCommerce software for building online stores and multi-vendor marketplaces, run on the customer's own server.

JavaScript library for bespoke data visualization that runs in the browser.

Component library for Tailwind CSS that adds named component classes and themes.

PHP library that converts HTML and CSS to PDF documents.

Open-source PHP engine for publishing blogs, with several blogs and users in one installation.

TypeScript ORM that maps SQL databases to typed schemas and queries, with a companion migration tool, Drizzle Kit.

E-commerce module suite that adds online store features to Drupal sites.

Open-source PHP content management system for websites, blogs and intranets, with a plugin and theme system.

JavaScript and TypeScript bundler and minifier, shipped as a native binary with a JavaScript API.

Pluggable linter for JavaScript that reports and fixes problems in source code through configurable rules and plugins.

Minimalist web framework for Node.js for building web applications and APIs.

Python web framework for building APIs from standard Python type hints, served by an ASGI server.

Open-source feature flag and remote config platform, available self-hosted or as a cloud service, with SDKs for web, mobile and server-side apps.

Open-source experience management and survey platform, self-hosted or offered as a hosted cloud service.

Open-source error tracking platform that works with Sentry client SDKs, self-hosted or hosted by GlitchTip.

JavaScript animation library, with plugins for scroll, SVG, text and UI animation, that runs in the browser.

Unstyled, accessible UI components for React and Vue, designed to work with Tailwind CSS.

Web framework built on Web Standards that runs on any JavaScript runtime.

Adapter protocol and client libraries for building single-page React, Vue and Svelte apps on top of server-side routing.

PHP image processing library for creating, editing and composing images through one API over GD, Imagick or libvips.

Open source identity and access management server with OpenID Connect, OAuth 2.0 and SAML 2.0 support.

JavaScript library for mobile-friendly interactive maps that runs in the browser.

Full-stack framework for Laravel that builds dynamic user interfaces in PHP without a separate JavaScript framework.

PHP full-text search library that stores its index in SQLite and needs no separate search service.

Open-source set of scalable vector icons, distributed as packages for vanilla JavaScript and for frameworks.

JavaScript Markdown parser that follows the CommonMark specification and supports syntax extensions and plugins.

Open-source content management system and application framework for websites and digital content, built on the Flow PHP framework.

Progressive Node.js framework for building efficient, scalable server-side applications with TypeScript.

C-based HTTP web server with reverse proxy, content cache, load balancer and mail proxy features.

Open source ecommerce platform written in PHP for running an online store on a web server.

Static search library that builds a search index from built HTML at build time and serves search from static files.

Testing framework for PHP that is built on PHPUnit and adds an expressive syntax for writing tests.

Unit testing framework for PHP, installed with Composer and run from the command line.

Open-core PHP platform for product experience management, combining PIM, DAM, CMS and digital commerce modules.

Browser automation and end-to-end test framework that drives Chromium, Firefox and WebKit through one API.

Open-source Go backend shipped as a single executable, with an embedded SQLite database, realtime subscriptions, authentication and a dashboard.

Opinionated code formatter for JavaScript and many other languages that rewrites source to a consistent style.

TypeScript and Node.js object-relational mapper that generates a type-safe database client from a schema file.

In-memory data store used as a cache, database and streaming engine, offered under source-available and open-source licenses.

JavaScript module bundler that compiles ES module source into bundles for browsers, Node.js and other platforms.

Application monitoring and error tracking platform, self-hosted or offered as Sentry SaaS.

Composable React components whose source code is added to a project with a CLI, so the project can customize it.

Syntax highlighter for JavaScript runtimes that colors code with the TextMate grammars used by VS Code.

Publishing system for the Internet, written in PHP, for multilingual websites with collaborative editing.

Coroutine-based PHP extension for concurrent networking and TCP, UDP, Unix socket, HTTP and WebSocket servers.

Utility-first CSS framework that generates styles from class names used in HTML and other templates.

Asynchronous state management and data-fetching library that caches, updates and synchronizes server state in web applications.

Open-source e-commerce CMS and framework built on Symfony for online stores and web content.

Headless rich-text editor framework for web applications, built on ProseMirror.

Cloud-native application proxy and reverse proxy that discovers routes from container, orchestrator and file providers.

Incremental bundler for JavaScript and TypeScript, written in Rust, that ships inside Next.js.

Documentation generator that builds HTML or JSON API documentation from the comments of TypeScript projects.

Open-source search server with an HTTP API that indexes collections of documents for instant search, self-hosted or as Typesense Cloud.

Open-source web and product analytics platform, self-hosted or offered as Umami Cloud.

BSD-licensed in-memory key-value datastore for caching, message queues and primary database use, forked from Redis.

Open-source headless commerce framework built on Node.js and TypeScript, with a GraphQL API.

Caching HTTP reverse proxy, installed in front of any HTTP server to cache its responses, configured with the Vinyl Configuration Language (VCL).

Frontend build tool and dev server for web applications, with a development server and a production bundler.

Testing framework for JavaScript and TypeScript projects, built on Vite.

JavaScript module bundler that packs application modules and assets into optimized output for browsers and other runtimes.

TypeScript-first schema validation library that validates data and infers static types from the same schemas.

TypeScript-based web application framework with client-side, server-side and prerendered rendering.

Web framework for content-driven websites that prerenders pages to static HTML and can render routes on demand.

PHP MVC web framework with a small footprint and few configuration requirements.

Python web framework with an ORM, URL routing, templating, forms and an automatic admin interface.

React-based static site generator for documentation websites and blogs written in Markdown and MDX.

Static site generator that transforms a directory of templates in various languages into HTML.

UI framework for Laravel for building admin panels and apps from Livewire-based tables, forms and other components.

Flat-file PHP content management system that stores pages as Markdown and YAML files without a database.

Static site generator written in Go that builds websites from Markdown content and Go templates.

Ruby static site generator that turns plain text, Markdown and Liquid templates into websites and blogs.

PHP web application framework with routing, an ORM, templating, queues and scheduled jobs.

Open-source headless commerce platform for Node.js with commerce modules, an admin dashboard and REST store and admin APIs.

React framework for building full-stack web applications, with routing, rendering and data fetching.

Vue-based framework for building server-rendered, static and hybrid websites and web apps.

TypeScript 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.

Router for React whose framework mode adds server rendering, static pre-rendering and data loading for building full-stack web apps.

Ruby web application framework with an ORM, routing, ERB views, background jobs and built-in deployment tooling.

Java framework for building stand-alone Spring applications with an embedded web server and auto-configuration.

Documentation theme and integration for the Astro framework that builds documentation websites from Markdown, Markdoc and MDX.

Laravel-based content management system that stores content in flat files or a database, with a control panel and optional static site generation.

Svelte-based framework for building web applications with server rendering, prerendering and client-side rendering.

PHP full-stack web framework built from a set of reusable, standalone components.

Static site generator built on Vite and Vue that turns Markdown content into content-centric websites.

Open-source PHP content management system for websites and blogs, with a block editor, themes and plugins.

Static site generator distributed as a single binary, with the Tera template engine, Sass compilation and search built in.

Hosted media content platform for publishers and broadcasters, with a newsroom editor, headless delivery through REST APIs and a front-end PageBuilder engine.

Hosted headless CMS with a block editor, Git-style commits and a GraphQL API.

Hosted content management platform from Bloomreach that delivers content to websites and apps through a Delivery API.

Hosted platform for visual page building and headless content, with a visual editor and a code product that works on existing repositories.

Hosted headless content management system for pages, collections and blog posts, delivered to websites and apps through a REST API.

Hosted content platform from Sitecore for building and delivering content of any type to any channel, with GraphQL and REST APIs.

Hosted headless content management service with a schema language, content APIs and a web app for authors.

Hosted digital experience platform from Core dna that combines content management, eCommerce, multi-site orchestration and forms.

Hosted service that turns Google Docs, Sheets and Drive files into structured content and publishes it as HTML and JSON through an API.

Hosted blog platform that embeds a blog into an existing website, or serves it headlessly through an API and SDKs.

Hosted visual website builder that edits the React components of a Next.js app.

Headless CMS for blogs, changelogs and articles, offered as a hosted workspace with a dashboard, a REST API and media hosting.

Hosted content management system for higher education institutions' websites, sold by Modern Campus with its SaaS hosting.

Fully managed SaaS content management system from Optimizely, with a visual editor, live preview and content delivered through Optimizely Graph's GraphQL API.

Cloud-based content hub from Oracle for managing content and delivering it across channels, with a REST content delivery API.

Cloud-native SaaS content management system from Sitecore, with a visual page builder, multisite management and content delivered through a GraphQL API.

Hosted digital experience platform that combines a headless CMS, visual editing, personalization and A/B testing, and composes content from other systems.

Hosted headless CMS for blogs on Next.js and React, with a hosted editor, a REST API and a JavaScript client.

Hosted headless project type from Wix that exposes Wix business APIs to a frontend the creator builds, which Wix hosts or the creator hosts.

Hosted enterprise platform that runs WordPress sites and Node.js applications, built on open-source WordPress.

Hosted headless CMS for blogs, with a hosted editor, hosted media and a TypeScript client.

Hosted headless and hybrid content management platform with a drag-and-drop editor, Parsley templating and REST and GraphQL APIs.

Hosted form backend and form builder that receives submissions from any HTML form and forwards them by email, webhook and integrations.

Hosted observability platform that combines log management, tracing, uptime monitoring, status pages and incident management.

Hosted billing, subscription and revenue operations platform for subscription and usage-based businesses.

Hosted authentication and user management service for applications, with an API and prebuilt components.

Hosted image and video platform with APIs for uploading, transforming, optimizing and delivering media through a CDN.

Feature flag and remote configuration service, offered as a hosted service, with an open-source proxy that runs in the user's own infrastructure.

Hosted consent management platform for website owners, sold as Cookiebot CMP by Usercentrics.

Hosted customer messaging platform that sends email, SMS, push, chat and in-app notifications through the provider accounts a team already uses.

Hosted localization platform that manages translation of software, app and website content through a web workspace, integrations and an API.

Hosted product analytics platform for websites and apps, with error tracking, Web Vitals, feature flags and uptime monitoring.

Hosted monitoring and security platform for infrastructure, applications, logs and errors, with agents and SDKs that send data to it.

Hosted customer and agentic identity platform for sign-up, login, single sign-on and user management, configured with visual workflows and SDKs.

Hosted feature flag platform built on OpenFeature, with client and server SDKs that evaluate flags in applications.

Hosted comment and community platform for websites, embedded with a script snippet or a plugin.

Hosted HTML-to-PDF conversion API that renders HTML and CSS to PDF with the Prince engine.

Hosted file upload, transformation and delivery API with a picker, storage destinations and SDKs for web and server-side apps.

Google's hosted platform of backend services for web and mobile apps, including authentication, databases, hosting, storage and messaging.

Hosted 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.

Hosted form backend that receives submissions from HTML forms, stores them, filters spam and sends them on by email and through integrations.

Hosted, invisible CAPTCHA service that protects websites and apps from bots with a proof-of-work puzzle that runs in the visitor's browser.

Hosted error tracking and logging service for web applications, with SDKs for several languages.

Hosted webhook infrastructure that receives inbound webhooks, routes and queues them, and delivers outbound events from an application to its customers.

Hosted comment, reaction and rating service that websites embed with a script, with moderation tools.

Hosted image and video transformation, delivery and digital asset management service, with transformations set by URL parameters.

Hosted image processing service that transforms, optimizes and delivers images and video through URL parameters.

Hosted compliance service that generates privacy and cookie policies and runs cookie consent banners for websites and apps.

Hosted authentication, user management and authorization service for web and mobile apps, with SDKs and an API.

Hosted notification service with a managed API and dashboard for sending in-app and out-of-app product notifications.

Hosted feature flag and runtime control service that applications read through LaunchDarkly SDKs.

Hosted payments, subscriptions and merchant-of-record service for selling software, digital downloads and license keys.

Hosted realtime service with sync, presence, comments and notifications for multiplayer apps.

Hosted translation management platform for software, mobile and web app strings, with a CLI, an API and a language CDN.

Hosted localization management platform for websites and apps, with a CDN and an API that deliver translations to the product.

Hosted session replay, product analytics and error tracking service for web and mobile apps, fed by a client SDK.

Hosted localization platform for software, websites and mobile apps, with an API, a CLI and translation workflow management.

Hosted email platform for SaaS companies that sends marketing, lifecycle and transactional email, managed through a web app and a REST API.

Hosted transactional email service with an email API, an SMTP relay and official SDKs.

Hosted email API and SMTP service for sending, receiving and tracking email, run by Sinch.

Hosted email API, SMTP and email sandbox service for testing and sending email.

Hosted visual automation platform for building workflows and AI agents that connect business apps.

Hosted payment platform for online and in-person payments, with an API that websites and apps call to accept payments.

Hosted observability platform for monitoring applications, infrastructure, logs and user experience, with agents and OpenTelemetry ingestion.

Hosted 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.

Hosted usage-based billing service that meters usage, rates it against pricing plans and issues invoices, with an API for sending usage events.

Hosted merchant of record platform for software and digital products, covering checkout, subscriptions, payments and tax.

Hosted payment platform whose REST APIs, JavaScript SDK and server SDKs let websites and apps accept PayPal payments.

Hosted HTML-to-PDF API that converts raw HTML or URLs into PDF documents.

Hosted localization and translation platform that keeps source strings in a codebase and delivers translations back through an API, a CLI or an MCP server.

Hosted integration platform whose Connect toolkit adds thousands of API integrations to an app or an AI agent.

Hosted localization platform for managing translation projects, contributors and strings through a web app and a REST API.

Hosted billing platform for usage-based and subscription payments, with a public API and webhooks that a site or app calls.

Hosted transactional email service that sends application e-mail through an HTTP API and SMTP.

Hosted realtime platform for publish and subscribe messaging, presence, stored data and server-side logic, used through client SDKs.

Hosted realtime messaging API that delivers events published by a server to browser and mobile clients over WebSockets.

Hosted error tracking, real user monitoring and application performance monitoring service for web and mobile apps.

Hosted subscription management and recurring billing platform for subscription businesses, with an API and webhooks.

Hosted email API for sending transactional and marketing email from applications, with SDKs and webhooks.

Hosted error tracking service that receives errors from application SDKs, groups them and links each to the code and deploy behind it.

Hosted transactional and marketing email API and SMTP service, now offered as part of Twilio.

Hosted email sending service with an HTTP API for transactional email, now run as part of Bird.

Hosted product development platform for feature flags, experiments and product analytics.

Hosted payments and billing platform, with APIs and a dashboard, operated by Stripe, LLC.

Hosted authentication and identity platform, with single sign-on, role-based access control and fraud protection, offered as an API and SDK service.

Hosted online form builder where forms are written as text documents, with embeds for websites and an API.

Hosted localization platform for software, websites and apps, with AI translation, an API, a CLI and CI/CD integration.

Hosted file upload and processing API for images, video, audio and documents, with server-side SDKs and a REST API.

Hosted form, survey and quiz builder whose forms can be embedded in websites and web apps.

Hosted file upload, processing and delivery platform, reached through an upload widget, an API and a CDN.

Hosted file upload service for web apps, where the app's own server authorizes each upload and the service stores the files.

Hosted HTTP message delivery and scheduling service that calls an endpoint with retries, delays and cron schedules.

Hosted screenshot and PDF rendering API that turns web pages and HTML into images and PDFs for other sites and apps.

Hosted consent management platform that shows consent banners on websites and apps and documents the consents given.

Web and product analytics platform offered as a hosted service.

Hosted form backend that sends contact-form submissions from static websites to an email inbox, without server code.

Hosted platform of authentication, single sign-on, user management and authorization APIs for apps.

Hosted no-code automation service that connects web apps and AI agents into workflows.

Hosted realtime messaging service for chat, live and collaborative apps, reached through its SDKs and APIs.

Hosted payment platform that accepts online and in-person payments and sends payouts through one API.

Hosted identity platform run by AWS for web and mobile apps, with a user directory, sign-in and OAuth 2.0 tokens.

Cloud email service from Amazon Web Services for sending and receiving email through an SMTP interface or an API.

Hosted error tracking and application performance monitoring service, connected to applications through language SDKs.

Hosted customer identity service that handles user login, single sign-on and user management for apps through APIs and SDKs.

Hosted data platform that collects, stores and analyzes event and telemetry data such as logs, traces and metrics.

Hosted email and messaging platform with RESTful APIs and SMTP for transactional email, and tools for email marketing.

Hosted platform that runs cloud browsers, search and fetch for AI agents and applications, reached through an API.

Hosted API gateway service that applies authentication, rate limits, spend caps and audit to APIs, LLM calls and MCP servers.

Multi-cloud database service from MongoDB, Inc. that deploys and manages MongoDB databases.

Managed cloud database hosting for MySQL-compatible Vitess and PostgreSQL databases.

Hosted server management service that installs servers at cloud providers and deploys sites to them.

Fully managed hosted Redis service from Redis Ltd that runs databases on public clouds.

Hosted control panel that connects, provisions and manages the server and web application infrastructure its users run at cloud providers or on their own hardware.

Hosted server management service that sets up servers at any cloud provider and runs web apps on them.

Hosted control panel that connects over SSH to servers the user brings and manages WordPress sites on them.

Managed, serverless Redis-compatible database that Upstash runs in the cloud, with optional replication across regions.

Hosted control panel for provisioning servers and running WordPress websites on them, for agencies and hosting businesses.

Hosted server management and deployment service that provisions servers on cloud providers or Laravel VPS and deploys web applications to them.

Hosted site search service that indexes a website through its crawler or API and is added to the site through script tags.

Hosted AI search and retrieval platform, served through APIs from data centers in multiple regions.

Hosted AI product search service for online stores, sold by Athos Commerce.

Hosted AI site search service for online retailers, sold by Athos Commerce.

Hosted service that runs fully managed Elasticsearch and OpenSearch clusters for search applications.

Hosted testing service that captures snapshots of UI states from Storybook, Vitest, Playwright and Cypress tests and compares them across browsers.

Hosted platform that provisions and manages servers from the user's own cloud providers and deploys PHP and Node.js apps to them.

Managed serverless SQL database that Cloudflare runs for Workers and Pages projects, with SQLite's SQL semantics.

Hosted site search and AI answer service for websites, with a dashboard for search settings and a REST API.

Hosted AI product search and discovery service for ecommerce websites, with a REST API, client libraries and a merchant dashboard.

Hosted enterprise AI search platform that indexes content from many systems and serves search, generative answers and product discovery through APIs and UI libraries.

Hosted AI search and product discovery service for ecommerce stores, with site search, recommendations and category merchandising through platform modules or an API.

Hosted zero-downtime deployment service for PHP and Laravel applications.

Hosted AI search and merchandising service for e-commerce and content websites, with platform plugins and a search API.

Hosted platform for AI assistants and agents that answer questions from a company's knowledge sources through Unified AI Search.

Hosted 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.

Hosted AI-powered search and product discovery service for e-commerce stores.

Hosted service that runs Apache Solr search indexes for websites and apps, with a web crawler, hybrid search and a RAG API.

Hosted visual testing and review service at percy.io, fed by snapshots from a command-line client.

Hosted vector database service for storing, searching and reranking embeddings through a managed API and console.

Google service for creating a search engine over chosen websites, served as a Google results page or embedded in a web page.

Hosted site search and product filter service for online stores, added to a store through platform apps and a JavaScript widget.

Hosted service that runs managed Apache Solr search infrastructure and a site search product for websites.

Hosted site search service whose search runs on the vendor's servers and is connected to a site through a script.

Hosted site search service that crawls a website and returns search results and analytics, owned by Elastic.

Hosted vector and full-text search database built on object storage, offered as a managed cloud service.

Hosted commerce platform for online stores, with REST and GraphQL APIs for headless storefronts.

Hosted headless CMS with a visual page editor, an AI assistant and a GraphQL delivery API for a Next.js frontend.

Hosted headless commerce platform with a REST API for checkout, orders, inventory and promotions.

Hosted headless commerce platform with HTTP and GraphQL APIs and a Merchant Center admin interface.

Hosted shopping cart and checkout that a website adds through a link, button or form, for products, subscriptions and donations.

Hosted 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.

Hosted localization and content platform that manages content in a spreadsheet-style interface and exposes it through a REST API.

Hosted headless CMS with draft, review and approval workflows, locales, and per-project API keys for delivering content to frontends.

Browser-based visual editor that edits the Markdown content of static sites stored in a GitHub repository.

Hosted headless content management platform with a web app for content teams and REST and GraphQL delivery APIs for developers.

Hosted headless content management platform for e-commerce, with content scheduling, personalized content and visual previews.

Japan-made, API-based hosted headless CMS with an admin panel for editors and a REST content API.

Hosted backend-as-a-service with a headless CMS and headless e-commerce for building digital products.

Hosted content planner and headless CMS where teams and AI agents plan, write and review content that a website reads over an API.

Hosted headless CMS that combines content management, personalization and A/B testing for websites.

Hosted digital experience platform for news publishers, with a headless publishing CMS, website builder, commenting and paywall tools.

Visual headless CMS for React and Next.js that lets editors compose pages from components the developers define.

Hosted web builder with a visual editor and a headless backend and REST interface, now sold as JustRelate Web Builder.

Hosted service that exposes the rows of a Google Sheet as a REST API.

Hosted commerce platform for online stores, with GraphQL Admin and Storefront APIs for headless storefronts.

Hosted content management system for static sites, with a web editor and sync to GitHub.

Hosted shopping cart and checkout that a website adds with a script, with a REST API, a JavaScript API and webhooks.

Hosted content platform that runs A/B tests on website content, added to existing sites with an embed tag.

Hosted git-based CMS that lets writers edit and schedule the content of a static site kept in a GitHub repository.

Headless CMS for Next.js sites, with a visual page builder for content editors, offered as a hosted service.

Hosted ecommerce platform with an admin dashboard and a backend API for products, orders and checkout.

Trello 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.

Fully managed headless CMS built on Umbraco, with a serviced backoffice and REST and GraphQL delivery APIs, hosted by Umbraco.

Hosted content management system for Hugo websites that stores content in Git and publishes through instant deployments.

Hosted headless and hybrid content management system with a visual manager and REST and GraphQL APIs.

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.

Hosted headless content management system with a visual page editor, a Fetch API served over a CDN, and a Management API.

Hosted content operations platform for commerce that manages content and media and delivers them through HTTP and GraphQL content APIs.

Hosted service that builds a GraphQL API and a headless content editor for a project from a data model designed in its web app.

Hosted content platform and database with a web admin, a REST content API and client libraries.

BCMS is a headless CMS offered as the hosted BCMS Cloud, with a public but no longer maintained open-source repository.

Hosted visual development and headless CMS platform, with open-source SDKs for rendering its content in JavaScript and mobile frameworks.

Hosted headless content management system with a content API, a dashboard for editors and client libraries for several languages.

Hosted headless content management system with a GraphQL API, a web editor and TypeScript SDKs.

Hosted Git-based content management system that edits the files of a static site in a repository, with visual editing and optional hosting.

Content management system written in PHP, published as open source under the AGPL.

Hosted headless CMS for websites and apps, with a REST content API, a JavaScript SDK and a web interface for editors.

Hosted digital experience platform from Zengenti with a RESTful delivery API, a dashboard for editors and roles per project.

Hosted headless CMS for marketing websites, with a REST content API, a visual preview for Next.js and a hosted admin panel.

Hosted headless CMS with REST and GraphQL content delivery APIs, live preview, custom roles and a web interface for authoring content.

Hosted headless CMS for content teams, with a web dashboard, a REST API and a JavaScript SDK.

Hosted headless commerce and product information management service with a GraphQL API and a web app for teams.

Hosted headless CMS that delivers multi-platform content through an API, with a web portal for authoring and deployment.

Hosted service that publishes Google Docs and Sheets content as HTML and JSON through a headless API and a browser extension.

Hosted headless content management system with a web editing interface and a REST API.

Hosted headless CMS interface for Google Firebase projects, with a no-code web user interface for content editors.

Hosted, API-first headless CMS with a web admin panel and auto-generated APIs for each content model.

Hosted content management platform for any kind of content, with a dashboard for editors and a RESTful content API for apps and websites.

Hosted headless CMS for website and app content, edited in a dashboard, read through a REST API and reachable by AI agents through MCP.

NotCMS is a hosted service that syncs Notion databases to a typed TypeScript SDK for building websites, with Notion as the editing interface.

Hosted platform that builds, versions and publishes documentation from Git repositories, including Sphinx and MkDocs projects.

Platform and open-source CLI that generates SDKs, API documentation and CLIs from API definitions such as OpenAPI.

Hosted documentation platform that builds sites from MDX files in a Git repository, with the mint CLI for local preview.

Hosted developer documentation platform that publishes API references and guides, with the rdme CLI for syncing API definitions.

Hosted headless content platform that stores structured content and delivers it through REST and GraphQL APIs.

Hosted headless content management system that delivers content through a read-only GraphQL API and manages it through a REST API.

Hosted headless content management system with a GraphQL content API and content federation from remote sources.

Hosted headless website builder and content management system in which developers define reusable page sections, called slices, that editors assemble into pages.

Hosted content platform that pairs an open-source, React-based editing studio with a hosted real-time content database queried through GROQ or GraphQL.

Hosted headless content management system with a visual editor, delivering content through REST and GraphQL APIs.

Open-source e-commerce plugin for WordPress.