TrackIR - TrackIR adds depth to the PC gaming experience by enabling players to take control of the in-game view.
Unity - The multiplatform game creation tools for everyone.
linux-track - Linuxtrack is a software bringing headtracking to Linux and Mac OS X.
Godot Engine - Feature-packed 2D and 3D open source game engine.
VSeeFace - VSeeFace is a free, highly configurable face and hand tracking VRM and VSFAvatar avatar puppeteering program for virtual youtubers with a focus on robust tracking and high image quality
Blender - Blender is the open source, cross platform suite of tools for 3D creation.