Best open-source Developer Tools projects

Desktop app and PowerShell script to debloat, tune, and health-check Android TV devices such as Nvidia Shield TV over ADB, with reversible changes.

A terminal UI for Linux that lists listening network ports and lets you inspect or kill the processes holding them.

A Python library for printing tabular data as attractive ASCII tables, with output to HTML, JSON, CSV, LaTeX, and Markdown.

Patches developer fonts such as Hack and Source Code Pro with thousands of icon glyphs from popular icon sets like Font Awesome and Devicons.

A native macOS app for browsing, editing, and organizing AI coding agent skills and agents across Claude Code, Cursor, Codex, Windsurf, and Amp.

A CLI that extracts a website's, repo's, or local project's design system into a folder of files Claude Code can read to build matching UI.

A skill for coding agents like Claude Code that generates Excalidraw diagrams from natural language descriptions.

Zsh plugin that shows fish-style inline command suggestions from your recent history, ranked by the TypeSafe Jev API.

Desktop, mobile, web and CLI app for running and orchestrating multiple coding agents such as Claude Code, Codex and OpenCode in parallel worktrees.

A lightweight desktop Kafka client for macOS, Windows and Linux that connects directly to brokers without Docker or a JVM.

Free, open-source Windows optimization tool with 42 tweaks for performance, privacy, and debloating, plus built-in system management utilities.