Search Engines - a large, general search engine that uses a relevance ranking

Google: - One of the largest and most widely used commercial searches engines, with a directory and other features.

Yahoo: - an older and popular search engine with directory. A drawback is the number of ads cluttering the page.

Bing: - a large search engine from Microsoft, which replaced MSN.

Gigablast: - a newer engine that began with a business slant, and is now catering to individuals.

Infopeople: - comparison of different search engines and how to use them