Web Search Engine

Search Engine 

• Search engine is a service that allows Internet users to search for content via the World Wide Web (WWW). A user enters keywords or key phrases into a search engine and receives a list of Web content results in the form of websites, images, videos or other online data. The list of content returned via a search engine to a user is known as a search engine results page (SERP).

Top 8 Search Engine

1. Google 
2. Bing
3. Yahoo
4. Ask.com
5. AOL.com
6. Baidu
7. Wolframalpha
8. DuckDuckGo                  

        1.Google 

 Google is an American multinational technology company that specializes in 
 Internet-related services and products, which include online advertising technologies, search engine, cloud computing, software, and hardware. Google was founded in 1998 by Larry Page and Sergey Brin while they were PhD. students at Stanford University in California. Together they own about 14 percent of its shares and control 56 percent of the stockholder voting power through supervoting stock. They incorporated Google as a privately held company on September 4, 1998. An initial public offering (IPO) took place on August 19, 2004, and Google moved to its headquarters in Mountain View, California, nicknamed the Googleplex. In August 2015, Google announced plans to reorganize its various interests as a conglomerate called Alphabet Inc. Google is Alphabet's leading subsidiary and will continue to be the umbrella company for Alphabet's Internet interests. Sundar Pichai was appointed CEO of Google, replacing Larry Page who became the CEO of Alphabet.
 
       2.Bing 

Bing is a web search engine owned and operated by Microsoft. The service has its origins in Microsoft's previous search engines: MSN Search, Windows Live Search and later Live Search. Bing provides a variety of search services, including web, video, image and map search products. It is developed using ASP.NET. 

        3.Yahoo

Yahoo! is a web services provider headquartered in Sunnyvale, California and owned by Verizon Communications through Oath Inc..The original Yahoo! company was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 2, 1995. Yahoo was one of the pioneers of the early Internet era in the 1990s.

         4.Ask

Ask.com (originally known as Ask Jeeves) is a question answering-focused e-business and web search engine founded in 1996 by Garrett Gruener and David Warthen in Berkeley, California.
The original software was implemented by Gary Chevsky from his own design. Warthen, Chevsky, Justin Grant, and others built the early AskJeeves.com website around that core engine. In late 2010, facing insurmountable competition from more popular search engines, the company outsourced its web search technology and returned to its roots as a question and answer site. Douglas Leeds was elevated from president to CEO in 2010.

        5. Aol 

AOL (formerly a company known as AOL Inc., originally known as America Online, and stylized as Aol.) is a web portal and online service provider based in New York City. It is a brand marketed by Oath, a subsidiary of Verizon Communications. 


        6. Baidu 

 Baidu, Inc. (Chinese: 百度; pinyin: Bǎidù, anglicized /ˈbaɪduː/ BY-doo), incorporated on 18 January 2000, is a Chinese multinational technology company specializing in Internet-related services and products, and artificial intelligence, headquartered at the Baidu Campus in Beijing's Haidian District.^[6] It is one of the largest AI and internet companies in the world. The holding company of the group was incorporated in the Cayman Islands. Baidu was established in 2000 by Robin Li and Eric Xu. Baidu is currently ranked 4th overall in the Alexa Internet rankings.


        7.Wolfram Alpha 

Wolfram Alpha (also styled WolframAlpha, and Wolfram|Alpha) is a computational knowledge engine or answer engine developed by Wolfram Alpha LLC, a subsidiary of Wolfram Research. It is an online service that answers factual queries directly by computing the answer from externally sourced "curated data", rather than providing a list of documents or web pages that might contain the answer as a search engine might.

   8.DuckDuckGo 

 
 DuckDuckGo (DDG) is an Internet search engine that emphasizes protecting searchers' privacy and avoiding the filter bubble of personalized search results.DuckDuckGo distinguishes itself from other search engines by not profiling its users and by deliberately showing all users the same search results for a given search term, and emphasizes returning the best results, rather than the most results, generating those results from over 400 individual sources, including crowdsourced sites such as Bing, Yahoo!, and Yandex. In September 2018, it had 27,092,618 daily direct searches on average.



       

History

•  Internet search engines themselves predate the debut of the Web in December 1990. The Who is user search dates back to 1982  and the Known Information Service   multi-network user search was first implemented in 1989. The first well documented search engine that searched content files, namely FTP files was Archie, which debuted on 10 September 1990.
   
•  Prior to September 1993 the World Wide Web was entirely indexed by hand. There was a list of webservers edited by Tim Burners-Lee and hosted on the CERN web-server. One Google.ml snapshot of the list in 1992 remains, but as more and more web servers went online the central list could no longer keep up. On the NCSA site, new servers were announced under the title "What's New!" The first tool used for searching content (as opposed to users) on the Internet was Archie.  The name stands for "archive" without the "v". It was created by Alan Emtage, Bill Heelan and J. Peter Deutsch, computer science students at McGill University in Montreal, Quebec, Canada. The program downloaded the directory listings of all the files located on public anonymous FTP (File Transfer Protocol) sites, creating a searchable database of file names; however, Archie Search Engine did not index the contents of these sites since the amount of data was so limited it could be readily searched manually. 
  
   

Kids Web Search Engine

• In many ways the internet is more safe today than it was in it’s infancy. Search engines are better at screening out websites that are harmful to children and teens when you activate their filtering features. There are also many search engines in existence that are specifically devoted to providing safe search for kids with a higher level of filtering. While there are more tools available and a greater awareness about online safety, the internet continues to evolve at a rapid pace. This poses new challenges that need to be addressed. By no means is this a time to ease up on educating kids and keeping the lines of communication open in regards to safe internet use. Parents and educators need to be vigilant in striving for the utmost in internet security for their kids, whether it be at home or in school. This is especially true regarding younger children who are not even aware of the dangers. It’s important to keep on top of new trends that may pose a risk. While kids search engines make the internet more safe, social media sites now pose a danger that was not even an issue a few years ago.

• Boolify
• Quintura for Kids
• KidRex
• Ask Kids
• KidsClick
• Yahoo Kids
• SquirrelNet
• Aga-Kids