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
agentmemory: Persistent Memory for AI Coding Agents
agentmemory gives coding agents persistent, searchable memory across sessions and tools. It captures work through agent integrations and exposes shared memory through MCP and REST, with a local-first runtime built on iii-engine.
ai-website-cloner-template: Recreate Websites as Next.js Apps
A template that equips AI coding agents to inspect a website and recreate it as a Next.js application. It suits developers rebuilding sites they own, recovering lost source code, or studying real-world interface implementations.
claude-code-best-practice: Learn Claude Code Workflows and Practices
A community-maintained guide to Claude Code practices, configuration, agents, skills, and development workflows. It helps developers move from ad hoc prompting toward repeatable, agentic engineering, with examples and links to further resources.
codegraph: Give Coding Agents a Local Code Knowledge Graph
CodeGraph builds and maintains a local graph of code structure so AI coding agents can retrieve relevant source, call paths, and change impact without exploring files one by one. It connects to multiple agents through MCP and supports many languages.
codex-plugin-cc: Use Codex from Claude Code
A Claude Code plugin that connects your existing local Codex CLI for code reviews and delegated tasks. It suits developers who want Codex in their current workflow, with background job controls and session handoff.
PptxGenJS: Generate PowerPoint Presentations with JavaScript
PptxGenJS creates editable PowerPoint files from JavaScript or TypeScript, for use in Node.js and browser-based applications. It suits developers who need to generate slides, charts, tables, and other presentation content in code.
andrej-karpathy-skills: Guide Claude Code Toward Safer Changes
A compact set of coding guidelines for Claude Code, based on Andrej Karpathy’s observations about common LLM coding mistakes. It encourages clarification, simpler implementations, focused edits, and verifiable goals.
skills: Add .NET Skills to AI Coding Agents
A curated collection of portable skills and host-specific agents for .NET and C# coding agents. It helps agents handle development, testing, upgrades, diagnostics, and other specialized .NET tasks.
chrome-devtools-mcp: Give Coding Agents Chrome DevTools Access
Chrome DevTools MCP lets coding agents control and inspect a live Chrome browser through MCP or a CLI. Use it for browser automation, debugging, and performance analysis when your workflow needs access to real browser behavior.
multica: Coordinate AI Coding Agents and Human Teams
Multica is a self-hostable workspace for assigning issues to AI coding agents and collaborating with them through review. It connects existing agent CLIs to team workflows, with runs and decisions linked to each issue.
opencode: Work with an Open Source AI Coding Agent
OpenCode is an open source AI coding agent for developers who want AI assistance in their coding workflow. It offers build and read-only plan agents, a terminal UI, and desktop apps in beta.
apm: Manage Dependencies for AI Agent Setups
APM manages AI-agent instructions, skills, prompts, plugins, and MCP servers through a project manifest and lockfile. It helps teams reproduce agent configurations across supported coding clients and apply installation security and policy controls.