Top DEVELOPER GitHub Repositories & Tools (2026)

A fast, open-source iOS Simulator for Xcode 27+. Bring back the classic Simulator workflow, plus deep links, push, proxy certs and hot reload in one window.

📦 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 Language Models (LLMs) or other AI tools like Claude, ChatGPT, DeepSeek, Perplexity, Gemini, Gemma, Llama, Grok, and more.

Universal provider proxy for OpenAI Codex & Claude Code — use any LLM (Claude, Gemini, Grok, DeepSeek, Ollama…) with Codex CLI, App, SDK, and Claude Code

Graph-Native Infrastructure for Context and Accountable AI Systems

Debugbar for Laravel (Integrates PHP Debug Bar)

Codebase intelligence for AI and humans: code health scores, auto-generated docs, git analytics, dead code detection, and architectural decisions via MCP.

A free, open-source developer workspace. Snippets, notes, HTTP requests, calculations, and dev tools in one local-first app.

Copy/paste detector for source code. 220+ languages, Rust engine, SARIF/HTML/badge reporters, GitHub Action, MCP server for AI agents.

:mailbox: SMTP Server + Web Interface for viewing and testing emails during development.

Run any process, on your machine or in an AI agent's environment, as if it were a pod in your Kubernetes cluster: real env vars, DNS, network, traffic.

📊 A minimalist, self-hosted WakaTime-compatible backend for coding statistics

Chat, specs, tasks, and code. An autonomous engineering platform. Full autonomy when you trust it. Full control when you don't.

A visual manager for fleets of Claude Code and Codex agents — real terminals, live context and cost, agents that message each other, across your Mac and any Linux box.

Develop your applications directly in your Kubernetes Cluster

An improved implementation of the Ralph Wiggum technique for autonomous AI agent orchestration

JavaScript API for Chrome and Firefox

The ripgrep of AI context: a zero-dependency C++23 CLI + MCP server for coding agents. Find what you want without reading the repo, then check you built what you meant — blast radius, tests-to-run, quality deltas. Signatures at 74.7% fewer bytes than bodies; every guess labelled, every loss published. Paddle out with a map.

Bulk domain availability checking via RDAP, DNS, and WHOIS, with prefix/suffix permutations, regex patterns, MCP, and multiple output formats

High-performance code-intelligence engine for AI agents and IDE, supports 257 languages, multi repositories, based on graph, with access via CLI, MCP Server, and API. AI coding agents teammate - expose only needed information, cutting token usage up to 50x. 100% local. Discord: https://discord.gg/39MFHu3J5d

Ultrafast serverless GPU inference, sandboxes, and background jobs