Animate.css https://daneden.github.io/animate.css/ by Daniel Eden
Magic.css http://minimamente.com/example/magic_animations/ by Christian Pucci
Effeckt.css https://h5bp.github.io/Effeckt.css/ by H5BP
Animatable http://leaverou.github.io/animatable/ by Lea Verou
Page Transitions http://tympanus.net/Development/PageTransitions/ by Tympanus.net
Morf.js http://www.joelambert.co.uk/morf/ by Joe Lambert