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

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

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

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

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

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

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

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

JavaScript charting library that draws charts on an HTML5 canvas.

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

Safe, extensible ORM and query builder for Rust.

PHP library that converts HTML and CSS to PDF documents.

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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