The developer catalog
Open Source
Discover libraries, frameworks, and developer tools.
Browse our indexed subset of public GitHub repositories. About coverage
3862 projects in this index
Showing 1–40 of 3862
Archived excluded · Forks excluded
4070 indexed projects · Source fetched . This is the source fetch time, independent of server startup.
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public-apis / public-apis
490,890A collective list of free APIs
PythonUnclassified -
freeCodeCamp / freeCodeCamp
457,592freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.
TypeScriptFrontend / UI -
:books: Freely available programming books
PythonUnclassified -
openclaw / openclaw
392,689The AI that really does things. Any OS. Any Platform. The lobster way. 🦞
TypeScriptAI / Agents -
Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.
PythonUnclassified -
nilbuild / developer-roadmap
369,993Interactive roadmaps, guides and other educational content to help developers grow in their careers.
TypeScriptUnclassified -
morluto / rea
348,599Reverse engineer anything with agents, from app behavior down to native binaries.
TypeScriptAI / AgentsCLI / TerminalDeveloper Tools -
affaan-m / ECC
284,940The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
JavaScriptAI / AgentsDeveloper Tools -
deepseek-ai / deepseek-harness
255,909DeepSeek Harness: Everything is a Plugin.
TypeScriptUnclassified -
NousResearch / hermes-agent
255,609The agent that grows with you
PythonAI / Agents -
torvalds / linux
252,925Linux kernel source tree
CUnclassified -
react / react
251,591The library for web and native user interfaces.
JavaScriptFrontend / UI -
TheAlgorithms / Python
225,422All Algorithms implemented in Python
PythonUnclassified -
anomalyco / opencode
218,992The open source coding agent.
TypeScriptUnclassified -
vuejs / vue
212,645This is the repo for Vue 2. For Vue 3, go to https://github.com/vuejs/core
TypeScriptFrontend / UI -
n8n-io / n8n
208,164Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.
TypeScriptAI / AgentsCLI / Terminal -
tensorflow / tensorflow
201,158An Open Source Machine Learning Framework for Everyone
C++AI / Agents -
yt-dlp / yt-dlp
199,746A feature-rich command-line audio/video downloader
PythonCLI / Terminal -
trekhleb / javascript-algorithms
196,685📝 Algorithms and data structures implemented in JavaScript with explanations and links to further readings
JavaScriptUnclassified -
ultraworkers / claw-code
195,129An agent-managed museum exhibit, built in Rust with Gajae-Code / LazyCodex — developed and maintained with no human intervention.
RustUnclassified -
microsoft / vscode
194,168Visual Studio Code
TypeScriptDeveloper Tools -
firecrawl / firecrawl
193,509Supercharge your AI agents with data from the web and beyond. Building the library for superintelligence. 🔥
TypeScriptAI / Agents -
microsoft / markitdown
191,320Python tool for converting files and office documents to Markdown.
PythonUnclassified -
Significant-Gravitas / AutoGPT
187,678AutoGPT is the vision of accessible AI for everyone, to use and to build on. Our mission is to provide the tools, so that you can focus on what matters.
PythonAI / Agents -
ollama / ollama
184,080Get up and running with Kimi, GLM, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models.
GoAI / Agents -
anthropics / skills
182,512Public repository for Agent Skills
PythonUnclassified -
DietrichGebert / ponytail
169,807Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.
JavaScriptAI / AgentsDeveloper Tools -
huggingface / transformers
167,925🤗 Transformers: the model-definition framework for state-of-the-art machine learning models in text, vision, audio, and multimodal models, for both inference and training.
PythonAI / Agents -
Stable Diffusion web UI
PythonAI / Agents -
Snailclimb / JavaGuide
159,166Java 面试 & 后端通用面试指南，覆盖计算机基础、数据库、分布式、高并发、系统设计与 AI 应用开发
JavaScriptAI / Agents -
langgenius / dify
159,073Build Agentic workflows, RAG pipelines, with rich AI model and tool support on one collaborative workspace. Deploy on cloud, VPC, or self-hosted, so teams move from prototype to production without rebuilding the stack.
PythonAI / Agents -
open-webui / open-webui
156,305User-friendly AI Interface (Supports Ollama, OpenAI API, ...)
PythonFrontend / UIAI / Agents -
langflow-ai / langflow
155,872Langflow is a powerful tool for building and deploying AI-powered agents and workflows.
PythonAI / Agents -
A modern GUI client based on Tauri, designed to run in Windows, macOS and Linux for tailored proxy experience
RustUnclassified -
Genymobile / scrcpy
152,664Display and control your Android device
CUnclassified -
anthropics / claude-code
152,657Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands.
TypeScriptUnclassified -
langchain-ai / langchain
148,165The agent engineering platform.
PythonAI / Agents -
airbnb / javascript
148,057JavaScript Style Guide
JavaScriptUnclassified -
farion1231 / cc-switch
146,835A cross-platform desktop All-in-One assistant for Claude Code, Codex, OpenCode, OpenClaw, Grok Build & Hermes Agent. Only official website: ccswitch.io
RustUnclassified -
vercel / next.js
143,097The React Framework
JavaScriptDeveloper ToolsFrontend / UI
About coverage & classification
“All projects” means all eligible projects in this index. We have not indexed every GitHub repository. Discovery uses public GitHub searches across Rust, Python, JavaScript, TypeScript, Go, Java, C, C++, C#, and other languages, plus category queries. Configured star floors favor established projects; smaller or newer projects may be missing.
Topics and specific description phrases determine categories and project kinds, supplemented by a small override file. Projects can have multiple categories; insufficient evidence stays unclassified or unknown. Tutorials and resource lists are excluded. Labels are discovery aids and may be imperfect.
A public repository is not proof of an open-source license. Licenses are shown as reported by GitHub; missing or unrecognized metadata is stated explicitly. Review the repository’s license before use. Stars measure popularity, not quality.
Results use a local snapshot. Refreshes run in the background; failed or incomplete refreshes retain the last valid catalog. “Last pushed” uses GitHub’s pushed_at, not metadata update time.