Liquidfun
2D physics engine for games
Kinetic Js
KineticJS is an HTML5 Canvas JavaScript library that extends the 2D context by enabling canvas interactivity for desktop and mobile applications.
Processing.js
A port of the Processing visualization language to JavaScript.
Color
JavaScript color conversion and manipulation library
Jcrop
Jcrop (official) - Image Cropping Plugin for jQuery
jQuery QR Code
qrcode generation standalone (doesn't depend on external services)
Dagre
Directed graph renderer for javascript
Gif.js
JavaScript GIF encoding library
P2.js
JavaScript 2D physics library
Caman Js
Pure Javascript HTML5 (Ca)nvas (Man)ipulation
Isomer
Simple isometric graphics library for HTML5 canvas
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.
Proton
A particle engine for html5
Drawingboard.js
A canvas based drawing app that you can integrate easily on your website.
Image Mapster
jQuery plugin for enhancing HTML Image maps
Maker.js
📐⚙ Library for creating 2D vector drawings for CNC and laser cutter machines.
Obelisk.js
JavaScript Engine for Building Isometric Pixel Element with HTML5 Canvas