script.aculo.us : script.aculo.us provides you with
easy-to-use, cross-browser user
interface JavaScript libraries to make
your web sites and web applications fly.
flatpickr : flatpickr is a lightweight and powerful datetime picker.
Lean, UX-driven, and extensible, yet it doesn’t depend on any libraries. There’s minimal UI b...
Styletron : Styletron is a universal CSS-in-JS engine built from the ground up for high-performance.
jQuery : The Write Less, Do More, JavaScript Library
Draggable : Draggable is a modular drag & drop library, allowing you to start small and build up with the features you need. At its most basic, Draggable gives yo...
The Closure Compiler, Library, Templates, and Stylesheets help developers create powerful and efficient JavaScript.