DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. It's written in JavaScript and works in all modern browsers (Safari, Opera (15+), InternetExplorer (10+), Firefox and Chrome - as well as almost anything else usin
Client-side support for CSS custom properties (aka "CSS variables") in legacy and modern browsers
The HTML5 Shiv enables use of HTML5 sectioning elements in legacy InternetExplorer and provides basic HTML5 styling for InternetExplorer 6-9, Safari 4.x (and iPhone 3.x), and Firefox 3.x.
A collection of cross-browser utilities to go along with JSZip.
Function name shim (especially for supporting function names in InternetExplorer).