Best Windows Open Source Software

Free, distributed, encrypted messaging protocol with no central servers and no ads, ever.

Self-hosted open-source file sync and share platform with high performance.

High-fidelity third-party NetEase Cloud Music player

A fast, terminal‑based email client for developers

Unified IT infrastructure monitoring across servers, networks, containers, and cloud

Capture, upload, and share your screen with ease

Free, open-source i3-inspired tiling window manager for Windows

Genealogical research and family tree management

Simple videogames programming library

Private messenger with no user IDs, so you own your contacts and groups

Free, open-source AI voice input for desktop

Create your own Avatar Vtuber Streamer in Real-time!

Open-source media center for all your entertainment needs

Free, open-source download manager built for automating downloads from file hosts.

Generate diagrams from textual description

Free, open‑source video editor for fast, professional editing

A flexible, open-source level editor for 2D games

Free, open‑source crypto trading bot for automated strategies

Secure CommsOS for mission-critical operations

Open-source AI coding agent for VS Code, terminal, and SDK workflows

Continuous performance testing platform for simulating traffic at scale

Free, open-source tool to recover lost partitions, repair boot sectors, and undelete files.

A command-line tool that adds high-level Git commands for branching workflows like Git Flow and stacked changes.

Python packaging and dependency management with lock files and a built-in publishing workflow.