anseki
Implement the inertia scroll for `overflow` element. And the polyfill for `overflow:scroll` / `overflow:auto` and `element.scrollLeft` / `element.scrollTop` on Android browser.
André Ruffert
Simple, small and fast JavaScript/jQuery polyfill for the HTML5 <input type="range"> slider element
Webshim – polyfills jQuery with many HTML5 features
Alexander Farkas
modular capability-based polyfill loading libary, which extends jQuery with HTML5 features in legacy browsers
Ahmet Katrancı <ahmet@katranci.co.uk>
Sticky positioning polyfill for jQuery
Aurelio De Rosa
Audero Unified Placeholders is a very lightweight cross-browser jQuery plugin to emulate the HTML5 placeholder attribute on browsers that don't support it. This placeholder polyfill emulates perfectly the native behavior hiding the placeholders' text on the first input of the user and not on focus. In addition, it allows you to style the placeholders' texts using CSS and to override the browsers' native support (in those who had).