An HTML5 Flash Video (FLV) Player written in pure JavaScript without Flash. LONG LIVE FLV!
Hyperform is a complete implementation of the HTML 5 form validation API in Javascript. It replaces or polyfills the browser’s native methods and eases your validation task with custom events and hooks.
Shumway is an HTML5 technology experiment that explores building a faithful and efficient renderer for the SWF file format without native code assistance.
An HTML5 Presentation Editor. A GUI / Authoring Tool for ImpressJS and Bespoke.js
Source at https://github.com/tantaman/Strut
A simple, accessible HTML5 media player
Open source HTML5 hybrid app framework for PhoneGap & Cordova
Mobile-optimized HTML5, CSS and JavaScript with Web components
Responsive layout, Material and Flat design
2D+3D game making for indies
Able Player is a fully accessible cross-browser media player. It uses the HTML5 <audio> or <video> element for browsers that support them, and (optionally) the JW Player as a fallback for those that don’t.
HTML5 Boilerplate helps you build fast, robust, and adaptable web apps or sites. Kick-start your project with the combined knowledge and effort of 100s of developers, all in one little package.
The beautiful, open source front-end SDK for developing hybrid mobile apps with HTML5.
An interface for the Web Audio API that supports rhythms, multiple instruments, repeating sections, and complex time signatures.
A game in the address bar using html5 history.replaceState
HTML5 compatibility on mobile and tablet browsers with testing on real devices
A HTML5 client-side solution for generating PDFs. Perfect for event tickets, reports, certificates, you name it!
JavaScript Application Framework
manifestR is a bookmarklet, which you drag to your bookmarks bar. Then, when you visit any page, you can click the manifestR button, and it will create an HTML5 appcache manifest file for that page.
HTML5 Webcam for your website
Mobello is high performance javascript UI framework for HTML5 mobile app
an open source rich text editor based on HTML5 technology and the progressive-enhancement approach.
Build Desktop Applications for Linux, Mac and Windows using HTML, CSS and Javascript