MAJOR SEARCH ENGINES
|AOL Search||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.|
one of the largest search engines on the web, in terms of pages indexed. Its comprehensive coverage and wide range of power searching commands. It also offers human-powered directory results from LookSmart. Now controlled by CMGI. AltaVista also operates the Raging Search service
|Ask||... is a human-powered search service that aims to direct you to the exact page that answers your question. If it fails to find a match within its own database, then it will provide matching web pages from various search engines.|
|Direct Hit||Direct Hit measures what people click on in the search results presented at its own site and at its partner sites, such as HotBot. Sites that get clicked on more than others rise higher in Direct Hit's rankings. Direct Hit provides the main results which appear at HotBot (see below) and is available as an option to searchers at MSN Search. Direct Hit is owned by Ask Jeeves (above).|
|Excite||... offers a medium-sized crawler-based web page index, as well as access to human-powered directory results from LookSmart.|
|GoTo||GoTo sells its main listings. Companies can pay money to be placed higher in the search results, which GoTo feels improves relevancy. Non-paid results come from Inktomi. GoTo is not related to Go (Infoseek). Paid listing from GoTo also appear on other major search engines, including AltaVista, AOL Search, Lycos, HotBot and Netscape Search.|
|HotBot||HotBot is a favorite among researchers due to its many power searching features. 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. Lycos purchased Wired Digital in October 1998 and continues to run HotBot as a separate search service.|
|Lycos||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 the Open Directory project, and then secondary results come from the FAST Search engine.|
|Bing||Microsoft's MSN Search service is a LookSmart-powered
directory of web sites, with secondary results that come from Inktomi.
RealNames and Direct Hit data is also made available.
|Northern Light||Northern Light is another favorite search engine among researchers. It features a large index of the web, along with the ability to cluster documents by topic. Northern Light also has a set of "special collection" documents that are not readily accessible to search engine spiders. There are documents from thousands of sources, including newswires, magazines and databases. Searching these documents is free, but there is a charge of up to $4 to view them. There is no charge to view documents on the public web -- only for those within the special collection.|
|Open Directory||The Open Directory uses volunteer editors to catalog
the web. Lycos and AOL Search also make heavy use of Open Directory data.
|Yahoo||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 (beginning in July 2000, when Google takes over
from Inktomi). 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.