Godot Engine – Multi-platform 2D and 3D game engine

The Magic Mask for Android

The Serenity Operating System 🐞

qBittorrent BitTorrent client

KeePassXC is a cross-platform community-driven port of the Windows application “Keepass Password Safe”.

An open source re-implementation of RollerCoaster Tycoon 2 🎢

Vulkan-based implementation of D3D9, D3D10 and D3D11 for Linux / Wine

Minetest is an open source voxel game-creation platform with easy modding and game creation

Cross-platform music production software

Light-weight system monitor for X, Wayland (sort of), and other things, too

Open Source Routing Machine - C++ backend

OpenMW is an open-source open-world RPG game engine that supports playing Morrowind. Main repo and issue tracker can be found here: https://gitlab.com/OpenMW/openmw/

Acoustic spectrum analyser

OpenRW "Open ReWrite" is an un-official open source recreation of the classic Grand Theft Auto III game executable

Mesen is a cross-platform (Windows & Linux) NES/Famicom emulator built in C++ and C#

Reimplementation of Gothic 2 Notr

Casual ability game