COMING SOON: Easer version 2.0! Easer is undergoing a large update! It's been a long-time coming, but we're almost ready to release. Keep checking back for more info. - Features:
- Ease editor for editing custom ease functions
- Simple runtime API for accessing your eases
- Includes all basic easing functions by default
- Easy way for designers to tweak values
- Works with both Unity Basic and Unity Pro
- Supports all platforms!

Easer allows you to visualize and edit custom easing functions as curves, and use these custom eases at runtime. It serves as a easeing library with a visual aid to help you see exactly what your ease is going to look like. It allows you to create as many custom ease functions as you like, all of which can be unique and purposeful.

Easer also comes with all the standard easing functions built in (such as Back, Bounce, Cubic, Elastic, Sine, etc.) so you're ready to hit the ground running!

Links:
Official Website
Demo
Videos
Getting Started
Code
FAQ

Works on all platforms, including Mac/PC Standalone, iOS, Android and Web.