Try it out:
Velocity is undergoing its final stage of testing. Full release (including test suite) is scheduled for May 10th.
Velocity's workflow: http://css-tricks.com/improving-ui-animation-workflow-velocity-js
Velocity's speed: http://davidwalsh.name/css-js-animation
Velocity's codecast: https://www.youtube.com/watch?v=MDLiVB6g2NY&hd=1
Famo.us is a full-fledged mobile app framework built around a physics engine. It has the potential to beat all DOM-based animation libraries in terms of performance. The amount of work Steve Newcomb and Mark Lu have put into vertically integrating the Famous development stack is astounding.
GSAP is a full-fledged animation suite with a ton of power. Its features are nearly limitless -- as is the love its creator (Jack Doyle) puts into it. GSAP is what inspired me to pursue the development of Velocity.
As for Velocity, its focus is on being a very lightweight, very fast tool for drastically improving UI animation performance and workflow across all browsers and devices. I've dedicated the last three months of my life to it.
With each of these solutions, we're comparing options that are the product of nothing but love -- for performance and for the Web. Choose whichever is best suited to your task at-hand. They're all very fast.
The MIT License (MIT)
Copyright 2014 Julian Shapiro
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.