Google, the search engine to end all search engines.
Developed at StanfordUniversity.
Probably the world's biggest Linux Cluster. (Currently processes over 150 million queries a day, searching a multi-terabyte web index for every query with an average response time of less than a quarter of a second, with near-100% uptime.)
If you're outside NewZealand, it's very likely you found the Wiki through Google!
32 pages link to Google: