Spirit - The animation tool for the web.
Jitter - A simple animation tool on the web
Lottie by Airbnb - Easily add high-quality animation to any native app
Motion One - Motion One is a new animation library by the creator of Framer Motion and Popmotion.
Haiku Animator - Create powerful animations for any app or website
Artboard Studio - Online graphic design app mainly focused on product mockups.