xregexp.com — The one of a kind JavaScript regular expression library
XRegExp is an open source (MIT license) JavaScript library that provides an augmented, extensible, cross-browser implementation of regular expressions, including support for additional syntax, flags, and methods.
XRegExp is fully compliant with the regular expression flavor specified in ECMA-262 Edition 3 (ES3), and has been tested with Internet Explorer 5.5–8, Firefox 2–3.5, Safari 3–4, Chrome 1–2, and Opera 9. XRegExp uses feature detection—no browser sniffing.
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