Sylvester
Vector, matrix and geometry math JavaScript
Html2canvas
Screenshots with JavaScript
Flickity
:leaves: Touch, responsive, flickable carousels
Beerslider
A vanilla JS keyboard accessible plugin for any before-after comparison
Philogl
A WebGL Framework for Data Visualization, Creative Coding and Game Development
Flex Slider
An awesome, fully responsive jQuery slider plugin
jQuery QR Code
qrcode generation standalone (doesn't depend on external services)
Svg.js
A lightweight library for manipulating and animating SVG
Bonsai
BonsaiJS is a graphics library and renderer
Jcrop
Jcrop (official) - Image Cropping Plugin for jQuery
Baraja
Baraja is a jQuery plugin that allows to move elements in a card-like fashion and spread them like one would spread a deck of cards on a table.
Riloadr
Riloadr - A cross-browser framework-independent responsive images loader written in Javascript.
Joint
JavaScript diagramming library
Chocolat
Chocolat : Responsive jQuery Lightbox Plugin
Three.js
JavaScript 3D library.
Viewerjs
JavaScript image viewer.
Processing.js
A port of the Processing visualization language to JavaScript.