META-SEARCH ENGINES
Meta-search engines transmit search queries simultaneously to several individual search engines and their databases of web pages. Meta-search engines do not own a database of Web pages, they compile results from other sites.

Ask.com
http://www.ask.com/

Dogpile
http://www.dogpile.com/

Mamma
http://www.mamma.com/

Metacrawler
http://www.metacrawler.com/

MetaEureka
http://www.metaeureka.com/

Proteus
http://www.thrall.org/proteus

Search.com
http://www.search.com/

SurfWax
http://www.surfwax.com/

WebScout
http://www.webscout.com/