Best Dev Tools GitHub Repositories

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

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 CLI: local deterministic AST parsing, every edge explained, no vector store.

JavaScript API for Chrome and Firefox

Turn any idea, plan, or codebase into a beautiful interactive diagram. An agent skill for Claude Code, Codex, and more.

🙌 OpenHands: AI-Driven Development

CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

A cat(1) clone with wings.

2,955+ reusable AI agent skills for Claude Code, Codex, Cursor and Gemini CLI. AAS Core adds local catalog discovery, agent-owned selection and plan preview. CLI, MCP and plugins.

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

the runtime your coding agents live on

A modern file manager that helps users organize their files and folders.

Streamlit — A faster way to build and share data apps.

High-performance code intelligence MCP server. Indexes codebases into a persistent knowledge graph — average repo in milliseconds. 158 languages, sub-ms queries, 99% fewer tokens. Single static binary, zero dependencies.

A simple, fast and user-friendly alternative to 'find'

💥 Blazing fast terminal file manager written in Rust, based on async I/O.

The self-driving agent platform

Comfortably monitor your network traffic 🕵️‍♂️

Open-source agent for the terminal written in Rust. Use any provider or model. Issues & PRs always welcome