Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Lottie by Airbnb - Easily add high-quality animation to any native app
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Spirit - The animation tool for the web.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
App Animations - Gallery of beautiful iOS animations to inspire your next app