Description: Plyr is a simple, lightweight, accessible and customizable HTML5, YouTube and Vimeo media player that supports modern browsers.

Source: https://github.com/sampotts/plyr

Description: Dive Into HTML5

Description: HTML5 Doctor, helping you implement HTML5 today

Description: HTML5 Please - Use the new and shiny responsibly. Look up HTML5, CSS3, etc features, know if they are ready for use, and if so find out how you should use them – with polyfills, fallbacks or as they are.

Description: Can I use... Support tables for HTML5, CSS3, etc

Description: Responsinator. The Responsinator is designed to test responsive websites on different device resolutions

Description: HTML5, CSS3, JS Demos, Creations and Experiments | CSSDeck. Collection of Awesome CSS and JS Creations to help out frontend developers and designers.

Description: JavaScript Charts - HTML5 Canvas Based Charting Library | KoolChart. Looking for a ready-to-use JavaScript chart? Check out an HTML5 Canvas based JavaScript charting library, with over 400 instantly available sample charts

Description: AnyChart is a lightweight and robust JavaScript charting library. AnyChart is a lightweight and robust JavaScript charting solution with great API and documentation. The chart types and unique features are numerous, and the library works easily with any development stack.

Description: Home | Durandal. Durandal is a cross-device, cross-platform client framework written in JavaScript and designed to make Single Page Applications (SPAs) easy to create and maintain.

Description: HTML5 Reset Stylesheet | HTML5 Doctor

Description: YAML CSS Framework — for truly flexible, accessible and responsive websites. YAML is a modular CSS framework for truly flexible, accessible and responsive websites. The structure is extremely versatile in its programming and absolutely accessible for end users.

Description: Semantic UI. Semantic empowers designers and developers by creating a shared vocabulary for UI.