JavaScript libraries
jQuery The Write Less Do More JavaScript Library

Tag managers
Google Tag Manager helps make website tag management simple with tools solutions that allow small businesses to deploy and edit tags all in one place

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

JavaScript libraries
Light and open source responsive lightbox plugin with focus on performance for jQuery and Zepto js High DPI retina display support fast tap for touch devices