APNG to GIF - Convert APNG animations into animated GIF format.
Lottie by Airbnb - Easily add high-quality animation to any native app
Animator - Animator is a small animation tool. Using Animator is really easy. Example : Drop file1.bmp.
Spirit - The animation tool for the web.
Gifsicle - Gifsicle is a powerful, simple command line tool for creating, editing, and optimizing animated GIFs.
App Animations - Gallery of beautiful iOS animations to inspire your next app