Web Search Engines
- Academic Search Engines
- Directories of Search Engines (below)
- Book Content Search Engines
- Custom Alert Services
- Fact Sources Search Engines
- Indexes (of journal articles and other material)
- Multimedia Search - For search engines that find images, audio and video files
- Web Portals
- Blog Search Engines
- RSS Search Engines
- Local Search Engines (U.S.)
- Google - Based on quantity and quality of links to a site. The Google Cheatsheet will help you take advantage of special syntaxes. Explore Google Search tells how you can get instant factual information.
- Yahoo Search - Now "powered by Bing." Also, Yahoo shortcuts to search maps, weather, stock quotes, airline flights, and much more.
- Bing - Formerly MSN and Live.com (Microsoft)
- Blekko - Slice and dice your search results to get different emphases in your results
- Duck Duck Go - Useful information above the links, searches within sites ("bangs"), and more privacy options
- Exalead - Search engine from France offering a proximity operator, thumbnails of Web pages in the results, suggested related terms and categories, and more
- Similar Sites - Enter a site and it finds similar ones
- Wolfram Alpha - Calling itself a "computational knowledge engine," WA searches facts and does calculations based on its own database of "curated" facts
- FreeSearch - U.K. search engine
- Gigablast - Looks similar to Google, smaller database though
- Openfind - Search engine emphasizing Chinese-language results
- Overture - Includes paid listings; included in several other search engines' results (formerly GoTo.com)
- Gigablast Custom Topic Search - Lets you make a search form for up to 500 Web sites or subsites
- Google Custom Search Engine
- Yahoo Alpha
- Google Hacks:
- Web site for the book, Google Hacks, by Tara Calishain and Rael Dornfest (O'Reilly, 2003), which has programs you can use with Google's API, as well as search tips.
- List of hacks in the book
- Google Hacks Archives - Tips from Tara Calishain's ResearchBuzz
- Larry Chase's Best of Google Tools & Tips for Market Resources - Use these tools to check how your pages will do on Google
- Find Forward - All kinds of special Google searches: images, backlinks, blogs, no blogs, RSS, wildcards, etc.
- Google School - All kinds of tips and shortcuts (Lifehacker)
- Google Sets - Get a list of synonyms to add to your search
- Google Sitemaps will help Google search your site. Third party programs can help you make a sitemap.
- Shmoogle - Takes a Google search and presents the results in random order. Find stuff you didn't know was there!
- Soople - Assists with many kinds of expert searches
- Google API Proximity Search (GAPS) - Search terms within so many words of each other
- Google API Relation Browsing Outliner (GARBO) - Find related pages or linking pages for a given URL
- Google API Web Search by Host (GAWSH) - Find the top domains for a search
- XooMLe - Google results in XML
- Grokker - Get results in a "zoomable map" or outline form. Test it with a Yahoo search.
- Ask a Question sites to contact real people
- Brainboost Answer Engine
- Specialized Search Engines - Some of the search engines search other parts of the Internet, such as file hosting sites and Usenet (Open Directory Project)
The Big Four:
Best of the Rest:
Other Search Engines:
Custom Search Engines:
These sites let you make your own custom search engine that will search selected sites or topics.
Google's API makes it possible for others to develop applications that work with Google.
Visual Search Engines:
These applications produce visual representations of search engine results (including clustering).
Answer Engines (Natural Language Search Engines):
Ask these search engines a question. Note: Google and Bing sometimes provide answers in response to queries.
Web Directory of Search Engines:
- Beaucoup - 2000+ Search Engines, Indices, and Directories arranged by subject
- Invisible Web - Hundreds of sources in all subjects
- INFOdocket - Where librarian Gary Price reports his latest discoveries (Library Journal)
- Invisible-Web.net - Web directory of sources. Based on the book by Chris Sherman and Gary Price
- Profusion - 500 sources arranged in a subject directory and searchable from this site
The so-called invisible Web is data that's locked up in databases, or it's in non-text formats, but in either case, it's hidden from search engines. Also, What is the Invisible Web? (UC Berkeley libraries)
About Search Engines
- Web Current Awareness, which includes sites that discuss search engine news
- Search Engine Land (Chris Sherman)
- Search Engine Showdown (Greg Notess, librarian, Montana State University)
- Choose the Best Search for Your Information Need - Suggestions for common needs, geared toward students (NoodleTools)
- Alt Search Engines - Blog covering alternatives to the major search engines, often subject-specific search engines
- Extreme Searcher's Internet Handbook: Links - About many kinds of sites to help you search the Internet, not just search engines, per se. Compiled by Extreme Searcher Randolph "Ran" Hock
- Pandia Search Central
- ResearchBuzz - Tara Calishain has search engine news as well as other news of interest to researchers
- Search Engine Watch
- Search IQ - Reviews general search engines, subject search engines, Web directories, and search tools (ZDNet)
- Traffick: The Guide to Search Engines and Portals
- Web Search (About.com)
- Web Search Service Features
- Google Blog - Google's official blog
- Google Blogoscoped (a.k.a. Outer Court)
- Google Guide - For novice and experienced users
- Google Inconsistencies (Search Engine Showdown)
- Google Weblog
- Google World - A directory of sites leading to everything you'd want to know about Google [Indicateur.com]
- Watching Google Like a Hawk
- GeniusFind - Search engines and directories in many subjects
- Pandia Powersearch - "All-in-one list of search engines"
- Search Engine Colossus - Country- and subject-specific search engines
- Search Engine Guide - General and subject-specific search engines
- Search Engines Worldwide
- Web Search Tools (Library of Congress)
Directories of Search Engines:
Multiple Search Engines
- Excite - Searches several search engines; also a portal service
- HotBot - Has become a metasearch engine
- My Search
- Pandia Metasearch
- PlanetSearch - Searches 12 search engines at once
- Researchville - Searches news sites, discussion forums, reference sources, and multimedia, as well as standard Web search engines
- Search.com - Now a metasearch engine (CNet)
- Searchmania - 50 Web indexes in one
- Seekz - Searches 15 search engines and clusters results by site
- Surfwax - A metasearch engine with a difference. "Site snaps" give you information stored about the pages in your results. Registered users may save searches and results.
- Topic Hunter - All-in-one page that provides a search box for many different kinds of search engines (metasearch, news, blogs, RSS, directories, as well as the standard major engines)
Some of these sites (also known as metasearch engines) let you search several search engines all at once; others list many search engines on a single page (these are sometimes called all-in-one pages).
Search Engine Snooping
- Google Zeitgeist
See what your fellow surfers are searching. Some of these are popular searches of the day; others are what people are searching right this minute.
Search Engine Fun
- Disturbing Search Requests - Weird searches that led to users' sites
- Speegle - Have your search results read to you by a woman or man with a Scottish accent
- Gaggle - Random Google search
- Google Smackdown - See how two terms match up. Similar: Google Duel and Google Fight
- Googlebombing - The attempt to associate a Web site with a particular search statement.
- Googleshare - Like "mindshare," only expressed as a percentage of Google
- Googlewhacking - Find unique results for a pair of words
- Googlism - What Google thinks about someone or something (of course, Google doesn't actually think)
Web Search Software and Desktop Search
- Subject Search Suite
- UCmore toolbar
- Yahoo Desktop Search
- Ask Toolbar
This software works with your browser to help you search or surf. Some of this software can do desktop searches as well.