search engines

Ask.com

Fourth-largest search engine. Owned by InterActive Corp.

www.ask.com

Bing

Web search engine developed by Microsoft.

www.bing.com

Google

Preeminent search engine indexing billions of pages.

www.google.com | Also: Google Scholar

Yahoo!

Second-largest Internet search engine.

search.yahoo.com

meta search engines

Carrot2

Open source meta search, clustering, and search visualization engine.

carrot2.org

Clusty

Meta search and semantic clustering engine by Vivisimo.

www.clusty.com

Dogpile

Infospace's leading meta search engine. Searches Ask, Bing, Google, and Yahoo.

www.dogpile.com

iSEEK

Clustering and meta search engine by Vantage Research.

iseek.com

Mamma.com

Meta search engine developed by Copernic.