tenderlove's nokogiri at master — GitHub
http://github.com/tenderlove/nokogiri/tree/master

better than hpricot ;)

Nokogiri parses and searches XML/HTML faster than Hpricot, and also has correctly implemented CSS3 selector support as well as XPath support.

nokogiri is (one of) the fastest ruby XML parser. Parses and searches XML and HTML, and supports xpath and CSS3 selectors.