fennec

       fennec is an open source game engine licensed under the GPL 3.0 License. This project started in February of 2025 and has grown quite large, it aims to implement all elements of a game engine internally as well as reimplement the C++ Standard Template Library (STL) to standardize its implementation across platforms and compilers. As of August 2025, the math library covers the OpenGL Shading Language 4.6 Specification, a prototype for creating application windows has been implemented on Linux using Wayland in a separate branch, and about half of the data structures in the Standard Template Library (STL), plus three custom data structures have been implemented.