HTML5 Boilerplate : HTML5 Boilerplate helps you build fast, robust, and adaptable web apps or sites. Kick-start your project with the combined knowledge and effort of 100...
AOS : Animate On Scroll Library.
Small library to animate elements on your page as you scroll.
Ionic : The beautiful, open source front-end SDK for developing hybrid mobile apps with HTML5.
Selectivizr : CSS3 pseudo-class and attribute selectors for IE 6-8
When can I use... : Compatibility tables for support of HTML5, CSS3, SVG and more in desktop and mobile browsers.
‘320 and Up’ is a lightweight, easy to use and content first responsive web design boilerplate.