Dogpile - Popular metasearch site that sends a search to a customizable list of search engines, directories and specialty search sites. Inference Find - An alternative to typical metacrawlers, Inference lists results grouped by subject, rather than by search engine or in one giant list. Internet Directory Internet directories, unlike search engines, are created and maintained by human editors, not electronic spiders or robots. The editors review and select sites for inclusion in their directories on the basis of previously determined selection criteria. The resources they list are usually annotated.
Directories tend to be smaller than search engine databases.
The following Internet diricetories are collections of reviewed and recommended links that have been created by subject specialists, usually librarians, to support research needs and to pinpoint high quality sites on the web. They point to specialized databases on the web created by professors, researchers, experts, governmental agencies, business interests, or other subject specialists and individuals who have a deep interest in a particular field and have accumulated and compiled web links to it. Argus Clearinghouse - Sites are annotated, reviewed and rated by subject experts. Search or browse the hierarchically arranged directory. Encyclopedia Britannica Internet Guide - Annotated, reviewed and ranked collection of resources arranged by topic.