Yahoo - portal

Google - search engine

Amazon.com - search engine, shopping and within books

Youtube - video clips

Msn - portal

Altavista- search engine

Lycos - search engines and other services

AOL Search - search engine and other services

Excite - portal

Open Directory Project - directory

Infospace - search services

Teoma - search engine

Dogpile - search engine

For search engines of India click here