Lottie by Airbnb - Easily add high-quality animation to any native app
Framer - 🔥 Design real websites right on the canvas.
Spirit - The animation tool for the web.
Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
App Animations - Gallery of beautiful iOS animations to inspire your next app
Anima App - Design, get feedback, convert to code, publish, iterate.