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/

stb single-file public domain libraries for C/C++

OpenGL Mathematics (GLM)

Hazel Engine

Webinterface for glad -> https://github.com/Dav1dde/glad

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

Premake

A multi-platform library for OpenGL, OpenGL ES, Vulkan, window and input

🐝 Honeybee is a free and open source plugin to connect Grasshopper3D to EnergyPlus, Radiance, Daysim and OpenStudio for building energy and daylighting simulation

Open Source Graphical Programming for Design