Zepto.js : Zepto is a minimalist JavaScript library for modern browsers with a largely jQuery-compatible API. If you use jQuery, you already know how to use Zept...
Bliss.js : Want to use Vanilla JS but find native APIs a bit unwieldy? Bliss is for you
xui.js : A super micro tiny DOM library for authoring HTML5 mobile web applications.
Moment.js : A javascript date library for parsing, validating, manipulating, and formatting dates.
Prototype : Easy Ajax and DOM manipulation for dynamic web applications
