$ Open source replacements for the software you're paying for.
4169 tools across 10 categories — ranked by real GitHub adoption, with license, language and activity on every entry. Sponsor slots are labeled and never affect rankings — no affiliate links.
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Top 60 by GitHub stars. Every card: license, language, last push.
rea ★ 441K Reverse engineer anything with agents, from app behavior down to native binaries.
OpenClaw ★ 394K An AI assistant that acts, not just answers
ECC ★ 299K The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor
Hermes Agent ★ 262K Desktop AI agent with persistent memory across platforms
react ★ 252K The library for web and native user interfaces.
OpenCode ★ 225K AI coding agent for terminal, IDE, and desktop
n8n ★ 210K Visual workflow automation with code flexibility and AI agents
firecrawl ★ 200K 
vscode ★ 195K Visual Studio Code
ponytail ★ 186K Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.
Ollama ★ 186K Run open-source LLMs locally on your own machine
stable-diffusion-webui ★ 165K Stable Diffusion web UI
Dify ★ 161K Build and deploy AI agents and RAG pipelines visually
Open WebUI ★ 158K One interface for every AI model you run or connect
Langflow ★ 156K Visual builder for AI agents and RAG pipelines
langchain ★ 149K The agent engineering platform.
ComfyUI ★ 146K The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface.
graphify ★ 144K Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini
next.js ★ 143K The React Framework
Excalidraw ★ 135K Collaborative whiteboard with a hand-drawn aesthetic
llama.cpp ★ 134K Run LLMs locally with minimal setup, maximum hardware support
kubernetes ★ 129K Production-Grade Container Scheduling and Management
RustDesk ★ 129K Self-hosted remote desktop you fully control
generative-ai-for-beginners ★ 123K 21 Lessons, Get Started Building with Generative AI
pi ★ 121K Minimal terminal coding agent you can fully customize
Browser Use ★ 120K Let AI agents control any browser, at scale
Godot ★ 120K Free 2D and 3D game engine for cross-platform projects
Orca ★ 119K Run multiple AI coding agents in parallel, side by side
Immich ★ 118K Self-hosted photo and video backup for your own server
caveman ★ 118K 🪨 why use many token when few token do trick. Viral skill + proxy for coding agents that cuts 65% of tokens by talking like a caveman.
three.js ★ 118K JavaScript 3D Library.
Supabase ★ 115K Postgres-powered backend platform for production apps
claude-mem ★ 115K Persistent Context Across Sessions for Every Agent – Captures everything your agent does during sessions, compresses it with AI, and injects relevant context b
Paperclip ★ 112K Org chart, budgets, and governance for AI agent teams
frp ★ 110K A fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet.
Agent-Reach ★ 110K Give your AI agent eyes to see the entire internet. Read & search Twitter, Reddit, YouTube, GitHub, Bilibili, XiaoHongShu — one CLI, zero API fees.
open-design ★ 107K 🎨 Best DeepSeek Harness Design Plugin. The open-source Claude Design alternative. 🖥️ Local-first desktop app. 🖼️ Your coding agent becomes the design engine:
fastapi ★ 105K FastAPI framework, high performance, easy to learn, fast to code, ready for production
Neovim ★ 103K Hyperextensible, Lua-powered Vim-based text editor
ant-design ★ 100K An enterprise-class UI design language and React UI library
playwright ★ 100K Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.
Scrapling ★ 99K 🕷️ An adaptive Web Scraping framework that handles everything from a single request to a full-scale crawl! Don't be shy, join here: https://discord.gg/EMgGbDce
LocalSend ★ 98K Share files securely across all devices without servers
OpenCut ★ 98K Open source video editor that runs in your browser
vllm ★ 97K A high-throughput and memory-efficient inference and serving engine for LLMs
manim ★ 96K Animation engine for explanatory math videos
puppeteer ★ 96K JavaScript API for Chrome and Firefox
odysseus ★ 95K Self-hosted AI workspace.
archify ★ 95K Agent skill for beautiful, verifiable architecture, workflow, sequence, data-flow, and lifecycle diagrams—self-contained HTML with motion and crisp export.
Zed ★ 94K High-performance code editor built for speed and AI
ragflow ★ 94K RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context la
Uptime Kuma ★ 93K Self-hosted uptime monitoring with a clean dashboard
OpenHands ★ 93K Autonomous coding agents that complete real engineering tasks
PaddleOCR ★ 92K Turn any PDF or image document into structured data for your AI. A powerful, lightweight OCR toolkit that bridges the gap between images/PDFs and LLMs. Supports
Home Assistant ★ 92K Local control smart home automation with privacy first
storybook ★ 91K Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation
Understand-Anything ★ 91K Graphs that teach > graphs that impress. Turn any code into an interactive knowledge graph you can explore, search, and ask questions about. Works with Claude C
Mermaid ★ 91K Text-based diagramming that renders in code and docs
hugo ★ 90K The world’s fastest framework for building websites.
worldmonitor ★ 90K Real-time global intelligence dashboard. AI-powered news aggregation, geopolitical monitoring, and infrastructure tracking in a unified situational awareness in