Best Windows Free Open Source Software

High-fidelity third-party NetEase Cloud Music player

Self‑hosted, peer‑to‑peer file sharing for developers and power users

A painless self‑hosted Git service for teams

Fast, unified engine for big data processing and analytics

Simple videogames programming library

Multi-platform 2D and 3D game engine

Free, open-source BitTorrent client for power users

Universal markup converter

Self‑hosted, Subsonic‑compatible music streaming server for audiophiles

High-performance web server and reverse proxy

High‑accuracy open‑source OCR engine for developers and researchers

General purpose TLS and crypto library

Open-source antivirus engine for detecting malware across platforms

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

Open source home automation with local control and privacy

Reusable computer vision tools for any model

Open-source Spotify client for every platform

An open platform for various uses

A powerful, extensible IDE for Java and beyond

A free, open-source IDE for Java and multi-language development

A Hex Editor for Reverse Engineers, Programmers and people who value their retinas when working at 3 AM

On-device subtitle generation for video editors

The free and reliable cross-platform FTP, SFTP, and FTPS solution.

Lightweight API exploration and testing IDE