There's http://lesselements.com/ http://lesselements.com/ for vendor-prefixes & https://github.com/machito/animate.less https://github.com/machito/animate.less

There's http://lesselements.com/ http://lesselements.com/ for vendor-prefixes & https://github.com/machito/animate.less https://github.com/machito/animate.less (based on http://daneden.me/animate/ http://daneden.me/animate/) for some pre-made animations.