Top COD GitHub Repositories & Tools (2026)

Open-source, self-hosted AI app builder — an agent builds real apps in isolated sandboxes on your own server, each live at a preview URL. Self-host in one command. MIT.

HTML template formatter and linter for Django, Jinja, Twig, Nunjucks, Handlebars, Liquid, Go templates, Mustache, Tera, Askama and Angular. Formats markup and template syntax together, and lints for accessibility, correctness and style. CLI, pre-commit hook and VS Code extension.

A plugin marketplace for GitHub Copilot and other AI agents that provides Power Platform development plugins, including reusable skills, agents, and commands for building and deploying solutions.

Open-source desktop AI agent workspace with one-click Claude Code, Codex, OpenClaw, Hermes Agent setup and custom LLM model routing.

VS Code extension for Vitest

Batteries-included backend that works with any stack.

A modern, lambda-friendly, 120 character Java formatter.

'afm' command cli: macOS server and single prompt mode that exposes Apple's Foundation and MLX Models and other APIs running on your Mac through a single aggregated OpenAI-compatible API endpoint. Supports Apple Vision and single command (non-server) inference with piping as well . Now with Web Browser and local AI API aggregator

Bitrise runner CLI - run your automations on your Mac or Linux machine -

pi coding agent in a technicolor web trenchcoat

MCP Gateway is a reverse proxy and management layer for MCP servers, enabling scalable, session-aware stateful routing and lifecycle management of MCP servers in Kubernetes environments.

undercover warns about methods, classes and blocks that were changed without tests, to help you easily find untested code and reduce the number of bugs. It does so by analysing data from git diffs, code structure and SimpleCov coverage reports

Free open-source extractor for AI coding assistant chat histories. Supports Claude Code, Cursor, Windsurf, Aider, Cline/Roo Code, and more.

Point Claude at any game. Skills, tools and the fal MCP that let Claude Code mod almost any PC game you own: recon, reverse engineering, fal-generated art/3D/audio, in-game testing, showcase videos.

Web UI for Pi Coding Agent that keeps sessions alive in real workspaces.

Blazingly-fast :rocket:, rock-solid, local application development :arrow_right: with Kubernetes.

Truly universal encoding detector in pure Python.

Native-session control plane for Codex, Claude Code, OpenCode, OMP and PI. Run, resume and hand off coding sessions across your machines.

A multi-project AI CLI workspace for local terminals, SSH hosts, and mobile-assisted workflows

Turns corrections into Preferences, Project-specific skills, and Shared skills for Claude Code, Codex, and OpenCode.