Search Engines
• About Search Engines
• Search Engines
• Meta Search Engines
• Directories
• Academic and Professional Directories
• Deep Web Search Engines
Bare Bones 101: A Basic Tutorial on Searching the Web
http://www.sc.edu/beaufort/library/pages/bones/bones.shtml
DeepWeb.com - Your Source for Deep Web Information
http://www.deepweb.com
How Search Engines Work
http://searchenginewatch.com/showPage.html?page=2168031
Invisible Web: What It Is, Why It Exists, How to Find It, and its Inherent Ambiguity
http://www.lib.berkeley.edu/TeachingLib/Guides/Internet/InvisibleWeb.html
LLRX.com - MetaSearch Engines
http://www.llrx.com/features/metasearch.htm
Web Searching Tips
http://searchenginewatch.com/showPage.html?page=facts
Search Engines
Search engines are web sites that collect and organize content from all over the Internet. Individual search engines compile their own searchable databases automatically by machine. Programs, often referred to as spiders or robots, crawl through web pages and search for documents containing specified keywords or keyword groups. Another program, called an indexer, reads these documents and creates an index based on the words contained in each document.
Accoona
http://www.accoona.com
AlltheWeb.com
http://www.alltheweb.com
Clusty
http://clusty.com
GO.com
http://go.com
NBCi Home
http://nbci.msnbc.com/nbci.asp
Searchmash
http://www.searchmash.com
Meta Search Engines
Unlike individual search engines, meta search engines do not own databases of web pages. Meta search engines are web sites that simultaneously search databases maintained by other individual search engines and/or web directories to get their listings. After collecting the results, meta search engines remove duplicate links and combine the search results into a single merged list.
Copernic Desktop Search
http://www.copernic.com/index.html
Dogpile Web Search
http://www.dogpile.com
Fazzle.com - A Fazzinating Feature Rich Search Fest!
http://www.fazzle.com
Ixquick Metasearch
http://www.ixquick.com
KartOO Visual Meta Search Engine
http://www.kartoo.com
Mamma Metasearch - The Mother of All Search Engines
http://www.mamma.com
MetaCrawler Web Search
http://www.metacrawler.com
MetaGopher - A Meta Search Engine
http://www.metagopher.com
MetaEureka Metasearch
http://www.metaeureka.com
Northern Light
http://www.northernlight.com
The Pandia Metasearch Engine - Searching the Internet With Many Search Engines at Once!
http://www.pandia.com/metasearch
Surfwax: Enabling Knowledge
http://www.surfwax.com
Vivisimo
http://vivisimo.com
VROOSH! Metasearch Engine - Metacrawler
http://www.vroosh.com
Zworks Metasearch
http://www.zworks.com
Directories
Directories are collections of Internet sites organized by subject. Users click on a topic of interest and then browse through the list of resources in that category. Directories are constructed and maintained by human beings, rather than by the automated computer programs used to create search engines.
About.com
http://www.about.com
Article Search Engine Directory: GoArticles.com
http://www.goarticles.com
Beaucoup!
http://www.beaucoup.com
Big Search Engine Index
http://www.search-engine-index.co.uk
eiNET / Directory
http://www.einet.net
ODP - Open Directory Project
http://dmoz.org
Searchport International Directory and Search Engin
http://www.searchport.org
Academic and Professional Directories
Academic and professional directories are usually created and maintained by subject experts to support the needs of researchers.
Academic Info - Educational Subject Directory
http://www.academicinfo.us
BUBL Information Service
http://bubl.ac.uk
INFOMINE: Scholarly Internet Resource Collections
http://infomine.ucr.edu
Internet Public Library
http://www.ipl.org
Internet Scout Project
http://scout.wisc.edu
Intute - The Best Web Resources for Education and Research
http://www.intute.ac.uk
Librarians Internet Index
http://www.lii.org
The WWW Virtual Library
http://vlib.org
Deep Web Search Engines
The deep web (or invisible web or hidden web) is the name given to web pages that cannot be indexed or crawled by traditional search engines. These pages often link to databases on websites that can only be retrieved if they are searched from within the sites themselves. Some deep websites restrict database access to members or subscribers; some limit access to their pages. Although traditional search engines cannot retrieve content from the deep web, it is estimated that 95% of the deep web can be accessed through specialized searches.
Completeplanet
http://aip.completeplanet.com
IncyWincy: The Invisible Web Search Engine
http://www.incywincy.com
LookSmart Vertical Search
http://search.looksmart.com
Turbo10 Search Engine
http://turbo10.com/