Open Source Developer Tools
Discover 445 open source Developer Tools repositories from GitHub, each with an analysis of what it does, key features, use cases and alternatives. Developer Tools projects here are most often combined with Python, AI Agents and CLI. Last updated October 4, 2026.
445 repositories · updated October 4, 2026
mkdocs: Build Project Documentation Sites from Markdown
MkDocs turns Markdown files into static documentation sites, configured with a YAML file. It suits teams and maintainers who want to publish versioned project guides without building a documentation system from scratch.
makesite: Generate Static Websites with Simple Python
makesite is a small Python static site generator designed for developers who want to understand and customize the generation code themselves. It builds pages, blog listings, and RSS feeds from local content and templates.
free-claude-code: Connect Coding Agents to Multiple AI Models
Free Claude Code is a local proxy and admin interface for routing coding agents to cloud and local language models. It suits developers who want one place to configure providers, switch models, and connect multiple coding clients.
opcode: Manage Claude Code Sessions and Agents in a Desktop App
opcode is a Tauri desktop app for organizing Claude Code projects and sessions, creating custom agents, and reviewing usage. It suits developers who want a visual workspace alongside the Claude Code CLI.
ECC: Equip Coding Agents with Reusable Engineering Workflows
ECC is a toolkit for adding structured engineering workflows to AI coding agents. It combines reusable skills, specialized agents, hooks, memory, and security scanning, with support across Claude Code and several other harnesses.
claude-video: Give AI Agents Timestamped Video Evidence
claude-video adds a watch skill that turns video URLs or local files into timestamped visual frames and transcripts for AI agents. It suits people who want an agent to analyze video, with options for local processing or Gemini and transcription services.
DeepSeek-Reasonix: Run a Local AI Coding Agent
DeepSeek-Reasonix is a Go-based coding agent for complex software engineering tasks, available through a CLI, desktop app, browser, and editor integrations. It combines configurable model providers with tools and controls for managing longer agent runs.
Athena-Public: Keep AI Coding Agent Context Across Sessions
Project Athena stores coding context in Markdown on your disk and uses a session routine to carry it forward between AI coding sessions. It suits developers who switch IDEs or models and want to keep their project memory portable.
grok-build: Code with an Interactive Terminal AI Agent
Grok Build is a Rust-based coding agent that works in a full-screen terminal interface or in headless scripts and CI. It can inspect and edit a codebase, run shell commands, search the web, and manage longer tasks.
cli-agent-orchestrator: Coordinate AI Coding Agents
CLI Agent Orchestrator runs AI coding CLIs in isolated tmux sessions and gives a supervisor tools to delegate work to specialist agents. It suits developers who want to coordinate parallel or sequential coding tasks while keeping each agent’s native CLI.
awesome-claude-code: Find Claude Code Tools and Resources
A curated directory of tools, skills, plugins, integrations, frameworks, and learning resources for Anthropic's Claude Code. Browse by category to find additions for development workflows or explore alternatives.
agent-memory: Give Coding Agents Persistent, Tiered Memory
agent-memory turns coding-session notes into organized, tiered knowledge and generates an AGENTS.md section with relevant context for new threads. It is a TypeScript tool for teams and developers who want agents to reuse knowledge without relying on manual searches.