Source: MarketingTerms.com

Search Engine - a program that indexes documents, then attempts to match documents relevant to the users search requests.

Metasearch Engine - a search engine that displays results from multiple search engines.

Portal - a site featuring a suite of commonly used services, serving as a starting point and frequent gateway to the Web (Web portal) or a niche topic (vertical portal).

Web Directory - organized, categorized listings of Web sites.

AltaVista - search engine located at www.altavista.com

Ask Jeeves – metasearch engine located at www.askjeeves.com

DogPile – metasearch engine located at www.dogpile.com

Excite – portal located at www.excite.com

Fast Search – search syndication company located at www.fastsearch.com and www.fast.no — also powers the search engine located at www.alltheweb.com.

Go Network – defunct portal located at www.go.com

Google – search engine located at www.google.com

Goto – pay per click search engine that changed names and is now located at www.overture.com

Inktomi - search syndication company located at www.inktomi.com

Ixquick – metasearch engine located at www.ixquick.com

Looksmart - Web directory located at www.looksmart.com

Mamma – metasearch engine located at www.mamma.com

Bing.com – MSN's new search engine

Northern Light Search – search engine located at www.northernlight.com

Raging Search – search engine located at www.raging.com

Yahoo – portal located at www.yahoo.com

Zworks.com – metasearch engine