Leverage the future of the web platform today.
A lightweight and modular front-end framework for developing fast and powerful web interfaces.
A sizzlin' hot selector engine.
MooTools Core Repository
A truly modular frontend framework
Replace jQuery or MooTools with a <4kB Library
Tapestry 5 jQuery integration. Fully replace Prototype and Scriptaculous with jQuery with as less as possible compatibility issues
MagJS - Modular Application Glue
A modern, lightweight browser library using ES5 natives
E+lements is a minimal DOM Library for the prime framework.