Best Windows Open Source Software

AI-powered video editing and generation

Open-source game launcher with a built-in downloader, library manager, and cloud saves

Independent open-source theme studio for the Codex desktop app — one image, one mood, the same real Codex underneath.

Open-source toolkit for audio, music, and speech generation research

Free, open-source CI/CD server for modeling complex, real-world deployment pipelines.

Open-source, no-code game engine for building and publishing 2D games.

A simple and elegant markdown editor

A note-taking app for networked thought

Operating system for robotics and driver assistance

Terminal music player inspired by winamp

Universal markup converter

Pure Go implementation of the WebRTC API

A secure password manager for teams

Cross‑platform real‑time system monitoring for admins and DevOps

Fast, disk space efficient JavaScript package manager built for monorepos.

Polyglot dev tool version manager, environment variable loader, and task runner in one CLI.

A modern, open‑source file manager for Windows with tabs, dual‑pane and cloud support

Animated desktop wallpapers and screensavers powered by WinUI 3

Watch movies and TV shows instantly via torrent streaming

Generate Software Bill of Materials from container images and filesystems

Free and open-source 3D parametric modeler

Fast, open‑source snippet manager for developers across Windows, Mac, and Linux

A modern, automatic HTTPS web server and reverse proxy

Fast, secure file sharing across your local network