Search Engine Relationships - Who Provides Results for Whom

 

Search Engine

Receives Sponsored Listings From

Receives Web Results From

Receives Directory Results From

AlltheWeb

Yahoo! Search Marketing

Yahoo!

n/a

AltaVista

Yahoo! Search Marketing

Yahoo!

n/a

America Online

Google

Google

Open Directory

Ask (formerly Ask Jeeves)

Google/Ask

Ask

n/a

Dogpile (meta search)

FindWhat, Kanoodle, Looksmart, Sprinks, Yahoo! Search Marketing

About, Ask (formerly Ask Jeeves), Google, MSN, singingfish, Teoma, Yahoo!, et al.

Open Directory

Excite (meta search)

FindWhat, Kanoodle, Looksmart, Sprinks, Yahoo! Search Marketing

About, Ask (formerly Ask Jeeves), Google, MSN, singingfish, Teoma, Yahoo!, et al.

Open Directory

Google

Google

Google

Open Directory

HotBot

Ask (formerly Ask Jeeves)

Ask (formerly Ask Jeeves), MSN

n/a

InfoSpace (meta search)

FindWhat, Kanoodle, Looksmart, Sprinks, Yahoo! Search Marketing

About, Ask (formerly Ask Jeeves), Google, MSN, singingfish, Teoma, Yahoo!, et al.

Open Directory

Inktomi

Yahoo! Search Marketing

Yahoo!

n/a

iWon

Google

Ask (formerly Ask Jeeves)

n/a

Kanoodle

Kanoodle

Inktomi

n/a

Kart00 (meta search)

LookSmart, Yahoo! Search Marketing

AltaVista, AlltheWeb, HotBot, Lycos, MSN, Nomade, Teoma, WiseNut

Exalead, Open Directory, La Toile du Québec

LookSmart

LookSmart

WiseNut

LookSmart

Lycos

LookSmart

Ask (formerly Ask Jeeves)

n/a

MetaCrawler (meta search)

FindWhat, Kanoodle, Looksmart, Sprinks, Yahoo! Search Marketing

About, Ask (formerly Ask Jeeves), Google, MSN, singingfish, Teoma, Yahoo!, et al.

Open Directory

Mamma.com

Ah-ha, mamma, LookSmart

Entireweb, GigaBlast, Google, MSN, Teoma

Open Directory

MSN

MSN, Yahoo! Search Marketing

MSN

n/a

Netscape Search

Google

Open Directory

Open Directory

Open Directory

n/a

n/a

Open Directory

Profusion (meta search)

LookSmart

About, AltaVista, America Online, Lycos, MetaCrawler, MSN, Netscape, Teoma, WiseNut

n/a

Teoma

Google

Teoma

n/a

Vivisimo (meta search)

LookSmart, MSN, Yahoo! Search Marketing

Lycos, MSN, Netscape, WiseNut

Open Directory

WebCrawler (meta search)

FindWhat, Kanoodle, Looksmart, Sprinks, Yahoo! Search Marketing

About, Ask (formerly Ask Jeeves), Google, MSN, singingfish, Teoma, Yahoo!, et al.

Open Directory

WiseNut

LookSmart

Zeal

n/a

Yahoo!

MSN, Yahoo! Search Marketing

Yahoo!

Yahoo!

Yahoo! Search Marketing

Yahoo! Search Marketing

n/a

n/a

n/a: not applicable.

Note that search engines that receive search results from the same source still might rank those results differently. For example: Yahoo!, AltaVista and AlltheWeb all receive results from the Yahoo! database, which consists of paid-inclusion entries from Yahoo! Search Marketing and listings generated by the Yahoo! spider, Slurp's, regular Web crawls. However, those engines utilize their proprietary algorithms when deciding which of the available database entries are the best matches for a given search phrase. Thus, a no. 1 ranking in Yahoo! will not necessarily ensure a no. 1 ranking with AlltheWeb or AltaVista.