This Mac OS skined, Browser in a browser Ajax application is simple sweet, with a refreshing layout Gollum seaches wikipedia at superb pace. Gollum gives you access to nearly all Wikipedias in all languages. Gollum is based on PHP and Javascript using XMLHttp request for communication, Ajax. Gollum is a GPL and it’s source code will be available soon.

Check out Gollum - the Ajax Wikipedia Browser