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

Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

DuckDB is an analytical in-process SQL database management system

Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

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

UPX - the Ultimate Packer for eXecutables

A free and strong UCI chess engine

Luanti (formerly Minetest) is an open source voxel game-creation platform with easy modding and game creation

An open source, turn-based strategy game with a high fantasy theme.

A Python-embedded modeling language for convex optimization problems.

Software defined radio receiver powered by GNU Radio and Qt.

SuperTux source code

Widelands is a free, open source real-time strategy game with singleplayer campaigns and a multiplayer mode. The game was inspired by Settlers II™ (© Bluebyte) but has significantly more variety an…

Vulkan/CUDA/HIP/OpenCL/Level Zero/Metal Fast Fourier Transform library

Chisel library for Unum Type-III Posit Arithmetic