Flex Slider
An awesome, fully responsive jQuery slider plugin
Easel JS
The Easel Javascript library provides a full, hierarchical display list, a core interaction model, and helper classes to make working with the HTML5 Canvas element much easier.
Chocolat
Chocolat : Responsive jQuery Lightbox Plugin
Beerslider
A vanilla JS keyboard accessible plugin for any before-after comparison
Vegas
Vegas is a jQuery plugin to add beautiful fullscreen backgrounds to your webpages. It even allows Slideshows.
Raphael
JavaScript Vector Library
Ejecta
A Fast, Open Source JavaScript, Canvas & Audio Implementation for iOS
Tremula Js
TremulaJS: Picture Streams + Momentum Engine + Bézier Paths + Multi-Device
jQuery QR Code
qrcode generation standalone (doesn't depend on external services)
Svg.js
A lightweight library for manipulating and animating SVG
Responsive Slides
Simple & lightweight responsive slider plugin (in 1kb)
Scenejs
An extensible WebGL-based engine for high-detail 3D visualisation
Lightslider
JQuery lightSlider is a lightweight responsive Content slider with carousel thumbnails navigation
Intense Images
A simple library to view large images up close using simple mouse interaction, and the full screen.
Bxslider 4
Responsive jQuery content slider
Magnific Popup
Light and responsive lightbox plugin with focus on performance.
Lightgallery.js
Full featured javascript lightbox gallery. No dependencies.