List of Referential Search Engines

List of Referential Search Engines

	The leading source for trustworthy and timely health and medical news and information.
	Infoplease.com, a free, authoritative, and respected reference for Internet users, provides a comprehensive encyclopedia, almanac, atlas, dictionary, and thesaurus. Infoplease.com contains facts on all subjects including sports, entertainment, technology, education, world news, and united states government and history.
	your gateway for interactive learning on the Web.
	Encyclopedia Britannica, Inc. is an American company best known for publishing the Encyclopedia Britannica, the world’s oldest continuously-published encyclopaedia.
	About.com is an online source for original information and advice, and was among the top 15 US Websites (Nielsen Online Spring 2008). It is written in English, and is aimed primarily at North Americans. It is owned by The New York Times Company.
	Wikipedia (Spoken content icon) is a free, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation.

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List of General Search Engines

List of General Search Engines

	Live Search (formerly Windows Live Search and MSN Search) is the name of Microsoft’s web search engine, designed to compete with the industry leaders Google and Yahoo!. Live Search is accessible through Microsoft’s Live.com and MSN.com web portal. Currently, Live Search is the fourth most used search engine after Google, Baidu, and Yahoo!
	Google search is a web search engine owned by Google, Inc., and is the most used search engine on the Web. Google receives several hundred million queries each day through its various services.Google search was originally developed by Larry Page and Sergey Brin in 1997.
	Offers search for web sites, images, news, blogs, video, maps and directions, local search and shopping.Ask.com is a search engine started in 1996 by Garrett Gruener and David Warthen in Berkeley, California.
	AltaVista provides the most comprehensive search experience on the Web!
	Search tool owned by Yahoo and using its database, but presenting results differently. Also offers news, picture, video, and audio search.
	Netscape operates a search engine, Netscape Search, powered by AOL Search. Another version of Netscape Search can be found at netscape.com/search, which has since been incorporated into Propeller.
	Yahoo! Inc. is an American public corporation headquartered in Sunnyvale, California, (in Silicon Valley), that provides Internet services worldwide. The company is perhaps best known for its web portal, search engine, Yahoo! Directory, Yahoo! Mail, news, and social media websites and services. Yahoo! was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 1, 1995.
	MSN is Microsoft’s portal, offering MSNBC News, sports, MSN Money, games, videos, entertainment & celebrity gossip, weather, shopping and more great content

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List of Most Poupular Search Engines and Launch Year

Timeline
Note: "Launch" refers only to webavailability of original crawl-basedweb search engine results. For full-list: List of search engines
Year	Engine	Event
1993	Aliweb	Launch
1994	WebCrawler	Launch
	Infoseek	Launch
	Lycos	Launch
1995	AltaVista	Launch (part of)
	Open Text Web Index	Launch
	Magellan	Launch (The McKinley Group)
	Excite	Launch
	SAPO	Launch
1996	Dogpile	Launch
	Inktomi	Founded
	HotBot	Founded
	Ask Jeeves	Founded
1997	Northern Light	Launch
	Yandex	Launch
1998	Google	Launch
1999	AlltheWeb	Launch
	GenieKnows	Founded
	Naver	Launch
	Teoma	Founded
	Vivisimo	Founded
2000	Baidu	Founded
2000	Entireweb	Founded
2003	Info.com	Launch
2004	Yahoo! Search	Final launch
	A9.com	Launch
2005	MSN Search	Final launch
	Ask.com	Launch
	GoodSearch	Launch
2006	wikiseek	Founded
	Quaero	Founded
	Ask.com	Launch
	Live Search	Launch
	ChaCha	Beta Launch
	Guruji.com	Beta Launch
2007	wikiseek	Launched
	Wikia Search	Launched
2008	Powerset	Launched
	Viewzi	Launched
	Cuil	Launched
	Boogami	Launched

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MSN Search Engine History

MSN Search Engine History:

Live Search (formerly Windows Live Search and MSN Search) is the name of Microsoft's web search engine, designed to compete with the industry leaders Google and Yahoo!

Microsoft's own web portal MSN has always provided a search service to users - MSN Search - tended to attract high search traffic. Microsoft have been quite slow to recognize the potential of developing a search service themselves and therefore the MSN search function was provided by third parties, most notably Inktomi.

In 2005, MSN finally launched its own search engine which was supported by a large advertising campaign. This new search tool is based on the Google model and provides some strong results, with a frequently updated database and a selection of advanced search functions. In the UK MSN Search is the second most popular search tool and benefits from its association with the main MSN portal and other online tools provided by Microsoft.

URL	http://www.live.com
Commercial?	Yes
Type of site	Search Engine
Registration	Optional
Available language(s)	Multilingual
Owner	Microsoft
Created by	Microsoft
Launched	March 8, 2006 (beta) September 11, 2006 (1.0) September 26, 2007 (2.0)
Current status	Active

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Yahoo Search Engine History

Yahoo Search Engine History

Yahoo! Search is a web search engine, owned by Yahoo!, Inc. and is currently the second largest search engine on the web, after its competitor Google.

Yahoo! was traditionally the largest and most important directory on the Internet. From the last few years, the Yahoo! directory has done few changes in its profile and as the size of the web has grown dramatically, the provision of a spidered search engine service became more important, with the introduction of Yahoo! Search.

A Yahoo! Search engine service was initially provided as a supplement to the directory and results were sourced from third parties - initially from Inktomi. In 2004 Yahoo! went through a significant acquisition process, buying Overture (along with AltaVista and AlltheWeb which had previously just been taken over by Overture) and then Inktomi. Yahoo! Search has now established a stronger search offering by using the Inktomi search engine and developing this with technology from its other search companies, so that the reach of Yahoo! has grown, to hold the third largest share of the UK search market.

URL	search.yahoo.com
Type of site	Search Engine
Available language(s)	Multilingual
Owner	Yahoo!
Created by	Yahoo!

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Google Search Engine History

Google Search Engine History

Google search is a web search engine knows as Google and launched in 1998 but in a short period of time Google become the most popular search engine due to the speed and accuracy of results served.

Google receives several hundred million queries each day through its various services. Google search was originally developed by Larry Page and Sergey Brin.Google is now the leader in terms of search traffic and the most important search tool to achieve a top placement on, with Google results also now being used by AOL and Netscape Search, as well as portals like Wanadoo and BBCi.

Google is also one of the main search engine to use 'link popularity' as a key element impacting search rankings, whilst Google's PageRank measure is a core indicator of how a site may perform in the search results, based on both internal and external factors on a website.

URL	www.google.com list of domain names
Alexa rank	2
Commercial?	yes
Type of site	Search Engine
Registration	optional
Available language(s)	multilingual (~100)
Owner	Google Inc.
Created by	Larry Page and Sergey Brin
Launched	September 15, 1997
Revenue	from AdWords
Current status	active

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Common Search Engine Principles

Common search engine principles Tips

To know more about SEO you need to be aware of the architecture of search engines.

They all contain the following main components:

Spider - a browser-like program that downloads web pages.

Crawler – a program that automatically follows all of the links on each web page.

Indexer - a program that analyzes web pages downloaded by the spider and the crawler.

Database – storage for downloaded and processed pages.

Results engine – extracts search results from the database.

Web server – a server that is responsible for interaction between the user and other search engine components.

Specific implementations of search mechanisms may differ. For example, the Spider+Crawler+Indexer component group might be implemented as a single program that downloads web pages, analyzes them and then uses their links to find new resources. However, the components listed are inherent to all search engines and the seo principles are the same.

Spider: Spiders component is a program downloads web pages just like a web browser. Spider can understand HTML code of the page. You may already know that there is an option in standard web browsers to view source HTML code.

Crawler: Crawler components find all links on each page. Crawler task is to determine where the spider should go either by evaluating the links or according to a predefined list of addresses.

Indexer: Indexer component parses each page and analyzes the various elements, such as text, headers, structural or stylistic features, special HTML tags, etc.

Database: This is the storage area for the search engines to store the data for downloads and analyzes. Sometimes it is called the index of the search engine.

Results Engine: The results engine ranks pages. Results Engine determines which pages best match a user's query or keywords which is typed on search bar to get information and in what order the pages should be listed. This is done according to the ranking algorithms of the search engine. Results Engine follows that page rank is a more valuable and any seo specialist is most interested in it when trying to improve his site search results.

Web server: The web server usually contains a HTML page and also responsible for displaying search results to the user in the form of an HTML page.

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History of Search Engines

History of Search Engines

In the early days of Internet development, the amount of available information was relatively small and the accesses of user are also less. Access was mainly restricted to employees of various universities and laboratories who used it to access scientific information. In those days, the problem of finding information on the Internet was not nearly as critical as it is now.

Website directories were one of the first methods used to access the information resources on the network. Links to these resources were grouped by topic. Yahoo was the first project of this kind opened in April 1994. As the number of websites in the Yahoo directory increased, the developer’s team of Yahoo made the directory searchable. Yahoo was not a search engine because searching was limited to those resources who’s listings were put into the directory.

Such link directories have been used in the past, but now a day they have lost much of their popularity. The reason is simple – even modern directories with lots of resources only provide information on a tiny fraction of the Internet.

For example, the largest directory on the network is currently DMOZ (or Open Directory Project). DMOZ contains information on about five million resources. Compare this with the Google search engine database containing more than eight billion documents.

The WebCrawler project started in 1994 and was the first full-featured search engine. The Lycos and AltaVista search engines appeared in 1995 and for many years Alta Vista was the major player in this field.

In 1997 Sergey Brin and Larry Page created Google as a research project at Stanford University. Google is now the most popular search engine in the world.

Currently, there are three leading international search engines – Google, Yahoo and MSN Search. They each have their own databases and search algorithms. Many other search engines use results originating from these three major search engines and the same seo expertise can be applied to all of them. For example, the AOL search engine (search.aol.com) uses the Google database while AltaVista, Lycos and AllTheWeb all use the Yahoo database.

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