JavaScript libraries
Touch enabled jQuery plugin that lets you create beautiful responsive carousel slider

JavaScript libraries
jQuery The Write Less Do More JavaScript Library

Font scripts
The internet s icon library toolkit Used by millions of designers devs content creators Open source Always free Always awesome

UI frameworks
Powerful extensible and feature packed frontend toolkit Build and customize with Sass utilize prebuilt grid system and components and bring projects to life with powerful JavaScript plugins

Font scripts
Typekit is an online service which offers a subscription library of fonts