Blender is one of the most powerful open-source alternatives in the creative software space. It covers the entire 3D pipeline modeling, animation, rigging, simulation, rendering, compositing, motion tracking and video editing all in one application.

It's free, open source and GPLv3, making it a great alternative to proprietary tools like Maya, 3ds Max and Cinema 4D.

GitHub: https://github.com/blender/blender/tree/main

More Details & Alternatives: https://digitalescapetools.com/tools/tool.html?id=blender