History.js gracefully supports the HTML5 History/State APIs (pushState, replaceState, onPopState) in all browsers. Including continued support for data, titles, replaceState. It supports jQuery, MooTools and Prototype.
Paper.js is an open source vector graphics scripting framework that runs on top of the HTML5 Canvas.
It offers a clean Scene Graph / Document Object Model and a lot of powerful functionality to create and work with vector graphics and bezier curves, all neatly wrapped up in a well designed, consistent and clean programming interface.
An enhanced HTML 5 file input for Bootstrap 3.x with file preview for various files, offers multiple selection, and more.
The plugin allows you a simple way to setup an advanced file picker/upload control built to work specially with Bootstrap CSS3 styles. It enhances the file input functionality further, by offering support to preview a wide variety of files i.e. images, text, html, video, audio, flash, and objects.
TabbedContent is a lightweight tabs plugin that uses the HTML5 history API to add your tab navigation to your browser's history. Also it is compatible with Bootstrap.
CircularLoader.js is a jQuery plugin made using HTML5 and javascript to create customizable cicular progress bars with or without percentage values. It can be used to create a progress indicator. It is a fully customizable plugin which works with all browsers compatible with HTML5.
wheelnav.js is an animated navigation menu component, a JavaScript library based on SVG. It can be a pie menu (radial menu, circular menu), tab navigation and more. The library comes with predefined CSS classes for easy styling and supports HTML5 data attributes for proper markup.
Beep.js is a JavaScript toolkit for building browser-based synthesizers using the WebAudio API.
Babylon.js is a complete JavaScript framework for building 3D games with HTML 5 and WebGL
WebSnowjq.js is a jQuery plugin made using HTML5 and javascript to create a virtual snow fall on a web page. WebSnowjq.jks is compatible with all browsers supporting HTML5. No effort is required to integrate WebSnowjq.js in a website.
A tutorial on how to create a slider with a "prism" effect using javascript, HTML5 canvas globalCompositeOperation and a layering technique.
Wavesurfer.js is a javascript library to create interactive navigable audio visualization using Web Audio and HTML5 Canvas. With wavesurfer.js you can create a cute HTML5 audio player or a sophisticated DJ application.
nude.js is a JavaScript implementation of a nudity scanner based on approaches from research papers. HTMLCanvas makes it possible to analyse image data and return whether it's nude or not. The script only detects nudity, the rest of the programming logic belongs to the programmer.
PDF.js is a Portable Document Format (PDF) viewer that is built with HTML5 and javascript. PDF.js is community-driven and supported by Mozilla Labs.
Texgen.js is a JavaScript library to create static or animated textures using HTML5 Canvas.
jQuery.filer is a simple HTML5 File Uploader, a plugin tool for jQuery which change completely File Input and make it with multiple file selection, drag&drop support, different validations, thumbnails, icons, instant upload, print-screen upload and many other features and options.