Best Windows Open Source Software

Free backup software to store encrypted backups online

A desktop email client that turns your inbox into a kanban board

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

Free digital logic design and simulation tool

A painless self‑hosted Git service for teams

Open-source telemetry dashboard for UART, BLE, MQTT, Modbus, CAN and more.

Open-source Spotify client for every platform

Full node software for the Bitcoin network

Open-source encryption tool that hides file contents, names, and folder structure before cloud sync.

Fast, unified engine for big data processing and analytics

Open-source, distraction-free read-it-later app

Modern, open-source terminal application for Windows

Fast, zero-copy serialization library for games and services

High‑performance file archiver with strong compression

A modern, secure password manager

Free and open source software for video recording and live streaming

SQL‑first data transformation for modern warehouses

A lightweight, non‑Chromium browser built for stability and control

Free research manager to collect, organize, cite, and share sources.

Automate time tracking and stay focused

A privacy-focused, freedom-loving fork of the Mozilla Firefox browser.

The fast, private, and independent web browser that puts your security first.

A Swiss Army knife of offline utilities for developers.

A Git client built around virtual branches for managing multiple changes at once.