Developers Library

Host, review and collaborate on Git repositories and software projects.

DevSecOps platform with Git repositories, CI/CD and project collaboration.

Git repository hosting with team collaboration and CI/CD integrations.

Community-driven nonprofit Git hosting platform based on Forgejo.

Question-and-answer community for programmers and software developers.

Developer community for sharing articles, discussions and programming knowledge.

Blogging and community platform focused on software developers.

Community discussions and links about programming and software development.

Documentation and learning resources for HTML, CSS, JavaScript and web APIs.

Fast searchable interface combining documentation for many developer technologies.

Hosting and automation platform for software documentation.

Hosted documentation for Rust crates published on crates.io.

JavaScript package registry and package management ecosystem.

Official Python Package Index for publishing and installing Python software.

Main Composer package repository for PHP libraries and frameworks.

Official package registry for the Rust programming language.

Package manager and gallery for the .NET ecosystem.

Central repository for Java and JVM libraries and artifacts.

Container registry for discovering, storing and sharing Docker images.

Cloud platform for deploying frontend applications and web projects.

Platform for deploying modern web applications with build and serverless features.

JAMstack and frontend deployment platform integrated with Cloudflare services.

Cloud platform for deploying web services, static sites, databases and workers.

Developer cloud platform for deploying applications, services and databases.

Application platform for running services close to users across global regions.

Cloud infrastructure platform offering virtual machines, databases and app hosting.

Cloud computing platform with infrastructure, databases, serverless and developer services.

Cloud platform for compute, storage, databases, AI and application services.

Cloud computing platform for applications, infrastructure, databases and developer tools.

Platform for designing, testing, documenting and collaborating on APIs.

Open-source API client for testing REST, GraphQL, gRPC and other APIs.

Open-source browser-based API development and testing client.

Tools and specifications for designing, documenting and testing APIs.

API marketplace and platform for discovering, testing and connecting APIs.

Free fake REST API for prototyping and testing frontend applications.

Interactive regular expression tester with explanations and debugging tools.

Online validator and formatter for JSON data.

Browser compatibility tables for web platform features and APIs.

Analyze npm package sizes and their impact on frontend bundles.

Collection of online converters for JSON, TypeScript, GraphQL and other developer formats.

Online frontend code editor and community for HTML, CSS and JavaScript experiments.

Browser-based playground for testing HTML, CSS and JavaScript snippets.

Cloud development environment for web applications and collaborative coding.

Browser-based development environment for full-stack JavaScript and web projects.

Browser-based coding workspace for building and running applications in many languages.

Online SQL playground for testing database schemas and queries.

Open-source backend platform with Postgres database, auth, storage and APIs.

Serverless Postgres platform designed for modern cloud applications.

Managed database platform focused on scalable MySQL-compatible workflows.

Managed cloud database service for MongoDB applications.

Google platform with authentication, databases, hosting and backend services.

Open-source backend platform with auth, databases, storage and functions.

Lightweight open-source backend with embedded database, auth and realtime APIs.

Reactive backend platform with database, functions and realtime synchronization.

Open-source backend platform built around Postgres, GraphQL and authentication.

Data API platform for building GraphQL and REST APIs over databases.

Type-safe ORM and database toolkit for Node.js and TypeScript.

TypeScript ORM focused on SQL-like queries, type safety and lightweight tooling.

In-memory data platform widely used for caching, queues and realtime workloads.

Distributed database platform based on SQLite and libSQL.

Distributed SQL database designed for resilient cloud applications.

Small embedded SQL database engine used in applications and devices.

Powerful open-source relational database with a mature ecosystem.

Popular open-source relational database used by web applications and services.

Open-source relational database compatible with much of the MySQL ecosystem.

Open-source system for deploying, scaling and managing containerized applications.

Infrastructure-as-code tool for provisioning cloud and platform resources.

Automation platform for configuration management, deployment and orchestration.

CI/CD automation integrated directly into GitHub repositories.

Continuous integration and delivery platform for automated software pipelines.

Hosted continuous integration service for building and testing software projects.

Open-source automation server for continuous integration and delivery workflows.

Observability platform for dashboards, metrics, logs and traces.

Open-source monitoring and alerting toolkit built around time-series metrics.

Application monitoring platform for errors, performance and debugging context.

Observability platform for logs, uptime monitoring, incidents and status pages.

Website and service uptime monitoring with alerts and status checks.

Secure tunneling platform for exposing local services to the internet.

Network platform offering DNS, CDN, security, edge compute and developer services.

Private networking service built on WireGuard for connecting devices and services.

Simple HTTP request and response service useful for testing API clients.

Instant endpoint for inspecting webhooks, HTTP requests and callback payloads.

Hosted REST API designed for frontend prototyping and request testing.

Official resources, specifications and learning material for GraphQL.

Official home of the OpenAPI Specification for describing HTTP APIs.

Community roadmaps and guides for developer roles and technologies.

Free coding curriculum, projects, certifications and developer articles.

Open-source full-stack web development curriculum built around projects.

Programming exercises and mentoring across dozens of programming languages.

Programming problems and interview preparation for software engineering roles.

Community coding challenges for practicing programming languages and algorithms.

Interactive regular expression editor with explanations, examples and community patterns.

Create attractive images of source code for documentation and social sharing.

Create polished screenshots of code, text and developer content.

Open-source browser for testing responsive websites across multiple device sizes.

Cloud platform for testing websites and apps across real browsers and devices.

Cloud testing platform for browsers, devices and automated test workflows.

Open-source framework for reliable end-to-end testing across modern browsers.

Frontend testing framework and cloud platform for modern web applications.

Fast unit testing framework designed for Vite-powered JavaScript projects.

Fast frontend build tool and development server for modern web projects.

Module bundler for JavaScript applications with a large plugin ecosystem.

JavaScript module bundler optimized for libraries and modern applications.

Zero-configuration build tool for web applications.

Extremely fast JavaScript and CSS bundler and minifier written in Go.

JavaScript compiler for using modern language features across environments.

Configurable JavaScript and TypeScript linting tool.

Opinionated code formatter supporting many languages and file formats.

Fast formatter and linter for JavaScript, TypeScript, JSON and related files.

Static analysis platform for finding code quality and security issues.

Engineering quality platform for maintainability and test coverage insights.

Test coverage reporting and analytics for development teams.

Static analysis tool for finding security and code issues using customizable rules.

Developer security platform for finding vulnerabilities in code and dependencies.

Open community producing web application security guidance, projects and standards.

Online scanner for reviewing HTTP response security headers.

Online service for testing SSL and TLS configuration of public servers.

Developer tools and documentation for decoding and understanding JSON Web Tokens.

Free automated certificate authority providing TLS certificates for websites.

Cloud development environments connected to GitHub repositories.

Popular extensible code editor for web, cloud and software development.

Professional IDEs and developer tools for many programming languages.

High-performance collaborative code editor built for modern development workflows.

Community-built distribution of VS Code without Microsoft branding and telemetry.

Open-source integrated development environment widely used for Java and other languages.

Interactive compiler explorer for inspecting generated assembly from many languages.

Online compiler and editor supporting many programming languages and databases.

Browser-based compiler and debugger for C, C++, Java, Python and more.

Online compiler supporting multiple versions of C++, Rust, Java and other languages.

Official browser playground for experimenting with TypeScript code and compiler options.

Online environment for running and sharing PHP code snippets.

Browser-based SQL environment for experimenting with SQLite and other database engines.

Collaborative tool for designing and visualizing database schemas.

Simple database relationship diagram tool using a text-based schema language.

Fast database diagram tool that converts text definitions into visual schemas.

Native database client for working with SQL and NoSQL databases.

Universal open-source database client supporting many database systems.

Open-source administration and development platform for PostgreSQL.

Email testing and sending platform for development and staging workflows.

Open-source email testing tool with SMTP server and web interface.

Developer email testing tool that captures SMTP messages locally.

Developer tool for intercepting, modifying and mocking network requests.

Open-source desktop tool for quickly creating mock APIs locally.

Mock API and HTTP inspection service for frontend and integration testing.

Browser client for testing and debugging WebSocket connections.

Quick reference and interactive editor for cron schedule expressions.

Explains shell commands by matching arguments to documentation and man pages.

Static analysis tool that finds common mistakes in shell scripts.

IBM open-source design system with components, guidelines and developer resources.

Popular React component library implementing Material Design patterns.

JavaScript library for building component-based web user interfaces.

Progressive JavaScript framework for building web interfaces and applications.

Web application framework for building scalable TypeScript applications.

UI framework that compiles components into efficient JavaScript.

React framework for full-stack web applications, routing and server rendering.

Full-stack Vue framework for server-rendered and modern web applications.

Web framework focused on content-driven sites and minimal client-side JavaScript.

Full-stack React framework and routing tools for modern web applications.

PHP web application framework with expressive APIs and a large ecosystem.

PHP framework and reusable components for robust web applications.

High-level Python web framework focused on rapid development and clean design.

Lightweight Python web framework for APIs and web applications.

Modern Python framework for building fast APIs with automatic documentation.

Full-stack Ruby framework emphasizing convention and developer productivity.

Java ecosystem for building enterprise applications, services and APIs.

Cross-platform developer platform for building web, desktop, cloud and service applications.

JavaScript runtime for building servers, command-line tools and network applications.

Secure JavaScript and TypeScript runtime with built-in developer tooling.

Fast JavaScript runtime, package manager, bundler and test runner.

Popular server-side programming language widely used for web development.

General-purpose programming language with a broad development ecosystem.

Systems programming language focused on performance, reliability and memory safety.

Compiled programming language designed for simple, reliable and scalable software.

Typed superset of JavaScript that improves tooling for large applications.

Modern programming language for JVM, Android, server and multiplatform development.

Programming language for Apple platforms and general-purpose software development.

Programming language optimized for building multiplatform applications.

Google UI toolkit for building mobile, web and desktop apps from one codebase.

Framework for building native mobile apps using React and JavaScript.

Platform and tooling for building, testing and deploying React Native applications.

Official Android documentation, SDK guidance and development resources.

Official tools, documentation and resources for Apple platform development.

Framework for building cross-platform desktop apps with JavaScript, HTML and CSS.

Toolkit for building small cross-platform desktop applications with web frontends.

Library for bidirectional realtime communication between clients and servers.

High-performance remote procedure call framework using protocol buffers.

GraphQL platform and libraries for building and managing data graphs.

Type-safe API framework for TypeScript applications without code generation.

Open-source identity and access management for applications and services.

Identity platform providing authentication and authorization services for applications.

Authentication and user management platform for modern web applications.

Reference site for OAuth standards, flows and implementation resources.

Developer documentation and API guides for integrating Stripe payments.

API documentation for messaging, voice, verification and communications services.

Developer-focused email API for sending transactional email from applications.

Cloud email delivery platform with APIs for transactional and marketing email.

Hosted search and discovery APIs for websites and applications.

Open-source fast search engine designed for application developers.

Distributed search and analytics engine for text, logs and application data.

Open-source message broker for reliable asynchronous communication between services.