Links
Search Engine and Search Directory Resources
Top Ten Search Engines and Online Search Directories*
Search Engines
All the Web (FastSearch)
AltaVista
Dogpile
Excite
Google
HotBot
Lycos
WebCrawler
Directories
AOL
Ask Jeeves
Infospace
MSN
Open Directory (DMOZ)
Rex
Scrub The Web
YAHOO
AllTheWeb.com (also known as FAST Search) consistently has one of the largest indexes of the web. FAST also offers large multimedia and mobile/wireless web indexes, available from its site. The site, also known as AllTheWeb.com, is a showcase for FAST's search technologies. FAST's results are provided to numerous portals, including those run by Terra Lycos. FAST Search launched in May 1999. Note: As of June 23, 2002, ALLTheWeb claims to have the largest database of Web pages.
AltaVista is one of the oldest crawler-based search engines on the web. It has a large index of web pages and a wide range of power searching commands. It also offers news search, shopping search and multimedia search. AltaVista opened in December 1995. It was owned by Digital, then run by Compaq (which purchased Digital in 1998), then spun off into a separate company which is now controlled by CMGI.
AOL Search allows its members to search across the web and AOL's own content from one place. The "external" version, listed above, does not list AOL content. The main listings for categories and web sites come from the Open Directory (see below). Inktomi (see below) also provides crawler-based results, as backup to the directory information.
Ask Jeeves is a human-powered search service that aims to direct you to the exact page that answers your question.
Google is a top choice for web searchers. It offers the largest collection of web pages of any crawler-based search engine. Google makes heavy use of link analysis as a primary way to rank these pages. This can be especially helpful in finding good sites in response to general searches such as "cars" and "travel," because users across the web have in essence voted for good sites by linking to them. The system works so well that Google has gained wide-spread praise for its high relevancy. Google provides web page search results to a variety of partners, including Yahoo and Netscape Search (see below). Google also provides the ability to search for images, through Usenet discussions and its own version of the Open Directory (see below).
You must ensure a quality Google listing. Google software engineer Matt Cutts reiterated that one step toward high Google rankings is to list in directories first, both DMOZ and Yahoo!.DMOZ (Open Directory Project) is particularly desirable because it's used by many smaller directories, creating more links. Unfortunately, it can be difficult to get listed if there is no category editor or if an editor is prejudicial. (You can appeal through a "feedback" link that goes to DMOZ staff.)
Site architecture, page design, and optimization of relevant content with strategic keywords in text, headers and tags is of utmost importance, as is a strategic linking strategy.
Also be aware that Google seems to be excluding some cross-linked pages for PageRank ratings. Its spiders now cross check link text with the linked site, excluding links with text that doesn't appear within the linked site. This may be the solution to "Google bombing," whereby linkers capriciously manipulate the PageRank of the linked site.
In most cases, HotBot's first page of results comes from the Direct Hit service (see above), and then secondary results come from the Inktomi search engine, which is also used by other services. It gets its directory information from the Open Directory project (see below). HotBot launched in May 1996 as Wired Digital's entry into the search engine market. Lycos purchased Wired Digital in October 1998 and continues to run HotBot as a separate search service.
Originally, there was an Inktomi search engine at UC Berkeley. The creators then formed their own company with the same name and created a new Inktomi index, which was first used to power HotBot. Now the Inktomi index also powers several other services. All of them tap into the same index, though results may be slightly different. This is because Inktomi provides ways for its partners to use a common index yet distinguish themselves. There is no way to query the Inktomi index directly, as it is only made available through Inktomi's partners with whatever filters and ranking tweaks they may apply.
iWon's results come from both Overture & Inktomi. iWon gives away daily, weekly and monthly prizes in a marketing model unique among the major services. It launched in Fall 1999.
LookSmart is a human-compiled directory of web sites. In addition to being a stand-alone service, LookSmart provides directory results to MSN Search, Excite and many other partners. Inktomi provides LookSmart with search results when a search fails to find a match from among LookSmart's reviews. LookSmart launched independently in October 1996, was backed by Reader's Digest for about a year, and then company executives bought back control of the service.
Lycos started out as a search engine, depending on listings that came from spidering the web. In April 1999, it shifted to a directory model similar to Yahoo. Its main listings come from AllTheWeb.com with some results from the Open Directory project. In October 1998, Lycos acquired the competing HotBot search service, which continues to be run separately.
Microsoft's MSN Search service is a LookSmart-powered directory of web sites, with secondary results that come from Inktomi. Direct Hit data is also made available.
Netscape Search's results come primarily from the Open Directory and Netscape's own "Smart Browsing" database, which does an excellent job of listing "official" web sites. Secondary results come from Google. At the Netscape Netcenter portal site, other search engines are also featured.
The Open Directory uses volunteer editors to catalog the web. Formerly known as NewHoo, it was launched in June 1998. It was acquired by Netscape in November 1998, and the company pledged that anyone would be able to use information from the directory through an open license arrangement. Netscape itself was the first licensee. Netscape-owner AOL also uses Open Directory information, as does Google and Lycos.
Yahoo is the web's most popular search service and has a well-deserved reputation for helping people find information easily. The secret to Yahoo's success is human beings. It is the largest human-compiled guide to the web, employing about 150 editors in an effort to categorize the web. Yahoo has well over 1 million sites listed. Yahoo also supplements its results with those from Google. If a search fails to find a match within Yahoo's own listings, then matches from Google are displayed. Google matches also appear after all Yahoo matches have first been shown. Yahoo is the oldest major web site directory, having launched in late 1994.
*Reprinted from: SEARCH ENGINE WATCHSEO and Search Marketing Related Information Sites
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