Kurt Kaiser CC0 1.0 Universal (CC0 1.0) Public Domain Dedication

Blender is a free 3D modeling and animation software. It is perfect for beginners and their newer version (2.8) is even better for beginners.

Misfit Model 3D is a free 3D modeling/animation program that is mostly for video games because of the multiple animation cycles function

3D Movie Maker is great for easy animation and for making a 1990's style animation and it's free too!