Lottie by Airbnb - Easily add high-quality animation to any native app
Create Studio - Create Studio is a web-based video creation platform that allows you to create fun and interactive videos for your website and attract more leads.
Marionette Studio - Marionette Studio is an online animation software for beginners and professionals. Animate 2D characters and environments in minutes with no prior skills.
Spirit - The animation tool for the web.
CSS Animation Cheat Sheet - Awesome CSS3 plugin for spiffy animations
Moho Pro - Moho Pro is a web-based 2d animation creation application software and offers you a wide range of features and options to create animations within a few minutes.