HTML5 Please : 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
Mobile HTML5 compatibility : HTML5 compatibility on mobile and tablet browsers with testing on real devices
HTML5 Cross Browser Polyfills : So here we're collecting all the shims, fallbacks, and polyfills in order to implant html5 functionality in browsers that don't natively support them.
Email Standards Project : The Email Standards Project is about working with email client developers and the design community to improve web standards support and accessibility ...
Compatibility tables for support of HTML5, CSS3, SVG and more in desktop and mobile browsers.