Wayland - Wayland is intended as a simpler replacement for X, easier to develop and maintain.
Unity - The multiplatform game creation tools for everyone.
Y Window System - Y Window System is a platform that allows you to improve the speed, working, and efficiency of the application in your operating system and helps you to increase the responsiveness of applications similar to any locally based app.
Godot Engine - Feature-packed 2D and 3D open source game engine.
XQuartz - The XQuartz project is an open-source effort to develop a version of the X.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.