Open source developer-tools projects
Every project in the registry tagged developer-tools, ranked by real GitHub adoption.
Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.
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
Autonomous coding agents that complete real engineering tasks
Sleek, intuitive API development and testing platform
Lightweight, fast, and open-source API client for developers
Model-agnostic platform for building intelligent AI agents
Empower your team to build custom internal tools rapidly
API Documentation Browser
Open-source coding agent for your IDE and terminal
Build data-rich React apps with ease and flexibility
DeepSeek-native AI coding agent for your terminal. Engineered around prefix-cache stability — leave it running.
AI-powered code completion for seamless development
Automated auditing, performance metrics, and best practices for the web.
Full-stack Python platform for web apps and internal tools
📦 Repomix is a powerful tool that packs your entire repository into a single, AI-friendly file. Perfect for when you need to feed your codebase to Large Langua
An open-source AI coding agent that lives in your terminal.
The first open-source harness builder for AI coding. Make AI coding deterministic and repeatable.
Cross-platform terminal with AI built in
AI agents that autonomously fix code and resolve GitHub issues
daily.dev is the personalized developer news feed and community. Get the best tech content from all over the web in your browser new tab or on mobile. Free and
Turns Data and AI algorithms into production-ready web applications in no time.
Run coding agents from your phone, desktop, or terminal
Fast grammar checking that respects your privacy
Run dozens of AI coding agents in parallel on your machine
Offline documentation browser. Your personal reference library, searchable in an instant.
Continuous Profiling Platform. Debug performance issues down to a single line of code
Free, local tool to track AI coding token usage and cost across 37 tools and agents (Claude Code, Cursor, Codex, Gemini and more), by model, project, and task.
Common layer for composing and governing AI agents
Test Automation Made Simple
Friendly and fast tool for sending HTTP requests
DeepAudit:人人拥有的 AI 黑客战队,让漏洞挖掘触手可及。国内首个开源的代码漏洞挖掘多智能体系统。小白一键部署运行,自主协作审计 + 自动化沙箱 PoC 验证。支持 Ollama 私有部署 ,一键生成报告。支持中转站。让安全不再昂贵,让审计不再复杂。
Intercept, modify, and debug HTTP(S) requests effortlessly
Graph database built for GraphRAG and multi-tenant AI apps
👨🚀 Turn API specifications into production-ready SDKs, validators, mocks, and more. 20+ plugins. Millions of weekly npm downloads. Used by Vercel, OpenCode,
The ultimate RAG for your monorepo. Query, understand, and edit multi-language codebases with the power of AI and knowledge graphs
Build reliable AI agents with unified tool integration
Track coding time effortlessly, gain insights instantly
A free and self-hosted PaaS alternative to Heroku / Netlify / Coolify / Vercel / Dokku / Portainer running on Kubernetes
Modern command-line HTTP client for the API era
The power of curl, the ease of use of httpie.
Intelligent Skill routing and workflow orchestration for AI agents — +21.12 pp reward, −29.6% tokens on SkillsBench with DeepSeekV4Flash-VE.
AI-powered platform for engineering LLM products
API Dash is a beautiful AI-powered open-source cross-platform (Desktop & Mobile) API Client built using Flutter which can help you easily create & customize you
A powerful and easy-to-use Go development framework that enables you to effortlessly build stable, reliable, and high-performance backend services with a "low-c
Offline-First Minimalistic HTTP & Socket Testing Client for the Web & Desktop
🏕️ Reproducible development environment for humans and agents
kubewall - Kubernetes Dashboard for Multi-Cluster Management Real-Time, Self-Hosted, Single Binary, AI-powered. Manage, monitor & debug K8s clusters in your bro
High-performance multi-data-source database client — ~30MB, AI & MCP ready, zero Electron bloat. | 高性能多数据源数据库客户端:约 30MB,AI 与 MCP 就绪,告别 Electron 膨胀。
Generate automated tests for your Node.js app via LLMs without developers having to write a single line of code.
Nimbalyst - The open-source visual workspace for Claude Code, Codex, and OpenCode. Run multiple coding agents in parallel, edit their work visually in markdown,
An extensible and friendly code review tool for projects and companies of all sizes.
🔖 It's a material-design about screen to use on your Android apps. A developer profile and application information easy to integrate.
AI Chat with powerful models for free
Your feedback loop with the agent
Open-source, self-hosted AI app builder — an agent builds real apps in isolated sandboxes on your own server, each live at a preview URL. Self-host in one comma
The foundation layer for agentic intelligence.
Fast, local-first Git GUI built in Rust
Lightweight orchestration harness built for your AI agents. The unfiltered truth about where your project stands.
Simulate API failures, throttling, and chaos — all from your command line.
AI Kanban & Development Environment. Orchestrate multiple agents, review changes, open PRs. Multi-provider, self-hostable, no telemetry.
Related tags
Frequently asked questions
How many open source developer-tools projects are there?
This registry tracks 69 projects tagged developer-tools, with 1,163,574 GitHub stars between them. The most-adopted is ponytail at 141,230 stars.
Are these developer-tools projects free to use?
Yes — 62 of the 69 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which developer-tools project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these developer-tools projects still maintained?
62 of the 69 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.