Open Source Developer Tools
Discover 368 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 3, 2026.
368 repositories · updated October 3, 2026
Worktrunk: Streamlining Git Worktree Management for AI Agent Workflows
Worktrunk is a powerful CLI tool built in Rust, designed to simplify Git worktree management. It's particularly optimized for parallel AI agent workflows, making it easy to handle multiple development branches simultaneously. By abstracting away the complexities of native Git worktrees, Worktrunk enhances developer productivity with intuitive commands and automation features.
mdx-a2ui: Safely Convert MDX to A2UI JSON for Enhanced Data Models
mdx-a2ui is an experimental project designed to convert MDX content, which combines prose and a closed component catalog, into A2UI JSON. This tool parses JSX without evaluation, ensuring a secure conversion process. It aims to leverage MDX for authoring while benefiting from A2UI's structured data model and validation capabilities.
Tau: A Minimalist Python Coding Agent for Your Terminal
Tau is a Python port of Pi's minimalist coding agent, designed to live in your terminal. It allows users to make requests like "explain this repo" or "add tests," and it can read files, edit code, and run commands. Beyond its utility, Tau also serves as a teaching project, demonstrating how coding agents are built with a small, readable codebase.
vibe-kanban-local: A Self-Contained Kanban for AI Coding Agents
vibe-kanban-local is a robust, local-only fork of the original BloopAI/vibe-kanban project, maintained after its upstream sunset. It provides a self-contained, single-user kanban board, allowing developers to integrate over ten different AI coding agents directly into their workflow without any cloud dependencies or logins. This tool is ideal for enhancing productivity with AI assistance in a private, offline environment.
opencode-worktree: Zero-Friction Git Worktrees for AI-Driven Development
opencode-worktree is an OpenCode plugin designed to streamline git worktree management. It automates the creation and deletion of isolated development environments, complete with terminal spawning and file synchronization. This tool is ideal for AI-driven workflows, offering a zero-friction experience for developers who prioritize automation and efficiency.
Tessera: A Comprehensive Workspace for AI Coding Sessions and Agent Orchestration
Tessera is a powerful workspace for organizing AI coding sessions, acting as a local control room for agents like Claude Code, Codex, and OpenCode. It enables parallel sessions, isolated Git worktrees, and Kanban boards, streamlining complex AI development workflows. Developers can manage agents, track tasks, and complete Git operations all within one integrated environment.
agenttrail: Real-time Observability for Your AI Coding Agents
agenttrail provides a local, open-source observability layer for AI coding agents. It transforms agent plans, tool calls, and file changes from tools like Claude Code, OpenAI Codex, and Cursor into a live, zoomable project map. This allows developers to monitor agent progress and activity in real time, ensuring they know what their agents are doing as it happens.
AFT: A Sensorimotor Cortex for Coding Agents with IDE and OS Capabilities
AFT provides coding agents with advanced IDE and OS capabilities, acting as a sensorimotor cortex for perception and action within a codebase. It enhances agent productivity and reduces token usage by offering structured code perception, precise symbol-aware edits, and background task management. Part of the CortexKit family, AFT integrates with platforms like OpenCode and Pi to elevate agent interaction with code.
tunnel-client: Securely Connect Private MCP Servers to OpenAI Services
The `tunnel-client` is an OpenAI-developed client that enables secure connections between private or localhost Model Context Protocol (MCP) servers and OpenAI services like ChatGPT, Codex, and AgentKit. It allows developers to integrate their internal MCP servers without exposing them to the public internet, ensuring enhanced security and operational control. This tool is ideal for scenarios requiring secure access from private networks to OpenAI's powerful AI models.
deja-vu: Retroactive Memory for AI Coding Agents
deja-vu is a powerful local-first tool that provides retroactive memory for AI coding agents, indexing past coding sessions from various agents, even those from before installation. This Go binary allows agents to recall relevant information without needing an LLM or embeddings by default. It enhances agent performance by providing context at the point of action, preventing repeated mistakes and improving efficiency.
xlrd: Read Data from Legacy Excel Files
xlrd is a Python library for reading cell data and formatting from legacy Excel .xls files. It suits scripts and applications that need to inspect older spreadsheets, but it does not read newer Excel formats such as .xlsx.
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.