AlleyCat UI is a lightweight GUI toolkit which means it doesn't rely on native peers, like Blender objects or any of its GUI related APIs. It doesn't necessarily mean that it'd be faster in ...
UPBGE is the free and open source 3D creation suite. It's a fork of Blender. Development is focused on old Blender Game Engine. UPBGE as a whole is licensed under the GNU General Public License, ...