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

Compatibility tool for Steam Play based on Wine and additional components

Notepad++ official repository

Frame profiler

Dolphin is a GameCube / Wii emulator, allowing you to play games for these two platforms on PC with improvements.

MAME

Diablo build for modern operating systems

Diablo devolved - magic behind the 1996 computer game

Guidelines Support Library

Cross-Platform SDR Software

Farbrausch demo tools 2001-2011

Khronos-reference front end for GLSL/ESSL, partial front end for HLSL, and a SPIR-V generator.

Improved version of the X-Ray Engine, the game engine used in the world-famous S.T.A.L.K.E.R. game series by GSC Game World. Join OpenXRay! ;)

An open source version of a game engine developed by Croteam for the classic Serious Sam games.

GZDoom is a feature centric port for all Doom engine games, based on ZDoom, adding an OpenGL renderer and powerful scripting capabilities

Tools for tracing OpenGL, Direct3D, and other graphics APIs

OpenAL Soft is a software implementation of the OpenAL 3D audio API.

Lightweight profiler library for c++

[ARCHIVED] Modern reimplementation of the Diablo 1 game engine

GammaRay is a tool to poke around in a Qt-application and also to manipulate the application to some extent.

Doom 3 BFG Edition source port with updated DX12 / Vulkan renderer and modern game engine features

100kHz to 6GHz 2 port USB based VNA

An open-source Tomb Raider 1-5 engine remake

High performance build system for Windows, OSX and Linux. Supporting caching, network distribution and more.

Vulkan header files and API registry

Vulkan Validation Layers (VVL)

OpenGL 4.6 on Metal

Opensource crossplatform Fallout 2™ game engine writen in C++ and SDL.

Build engine port backed by GZDoom tech. Currently supports Duke Nukem 3D, Blood, Shadow Warrior, Redneck Rampage and Powerslave/Exhumed.