LottieLab - Create and edit Lottie animations.
Lottie by Airbnb - Easily add high-quality animation to any native app
Lottie - Lottie is an online platform that helps the users in editing and shipping their animations in a few clicks.
Spirit - The animation tool for the web.
Animator - Animator is a small animation tool. Using Animator is really easy. Example : Drop file1.bmp.
App Animations - Gallery of beautiful iOS animations to inspire your next app