Parallax.js is the smart animation effects library using this you can create the best and creative animation effects within hours. This will provide the gyroscope or motion animation which will help to build the creative animations.
Bounce.js is the powerful animation script library for adding impressive animation effects. This will make the best animation like fold, unfold, Swoosh, Clock, smack, Slinky, and many more effects.
All of the above animation libraries help the front-end developer build the best animation projects. But the UI developer must use the creativity to integrate their animation projects.