Dagre
Directed graph renderer for javascript
Liquidfun
2D physics engine for games
Processing.js
A port of the Processing visualization language to JavaScript.
Kinetic Js
KineticJS is an HTML5 Canvas JavaScript library that extends the 2D context by enabling canvas interactivity for desktop and mobile applications.
Jcrop
Jcrop (official) - Image Cropping Plugin for jQuery
jQuery QR Code
qrcode generation standalone (doesn't depend on external services)
Gif.js
JavaScript GIF encoding library
P2.js
JavaScript 2D physics library
Proton
A particle engine for html5
Caman Js
Pure Javascript HTML5 (Ca)nvas (Man)ipulation
Isomer
Simple isometric graphics library for HTML5 canvas
Maker.js
📐⚙ Library for creating 2D vector drawings for CNC and laser cutter machines.
jQuery Focuspoint
jQuery plugin for 'responsive cropping'. Dynamically crop images to fill available space without cutting out the image's subject. Great for full-screen images.
Drawingboard.js
A canvas based drawing app that you can integrate easily on your website.
Obelisk.js
JavaScript Engine for Building Isometric Pixel Element with HTML5 Canvas
Image Mapster
jQuery plugin for enhancing HTML Image maps
Bonsai
BonsaiJS is a graphics library and renderer