Google Custom Search

Google Custom Search (formerly known as Google Co-op) is a platform provided by Google that allows web developers to feature specialized information in web searches, refine and categorize queries and create customized search engines, based on Google Search. The service allows users to narrow the 11.5 billion indexed webpages down to a topical group of pages relevant to the creator's needs.[2] Google launched the service on October 23, 2006.[3]

Google Custom Search
Google Custom Search logo
Type of site
Web search engine
OwnerGoogle (Alphabet)
Created byGoogle
RevenueFrom AdWords
LaunchedOctober 24, 2006 (as Google Co-op)
Current statusActive
Written inC++[1]


The Google Custom Search platform consists of three services:

Custom Search Engine

Google coop
Google Co-op logo

Released on October 23, 2006, Google Custom Search allows anyone to create their own search engine by themselves. Search engines can be created to search for information on particular topics chosen by the creator. Google Custom Search Engine allows creators to select what websites will be used to search for information which helps to eliminate any unwanted websites or information. Creators can also attach their custom search engine to any blog or webpage.[4] Google AdSense results can also be triggered from certain search queries, which would generate revenue for the site owner.[5]

Subscribed Links

Provided as part of the original service, subscribed links were discontinued on 15 September 2011.[6]

Subscribed Links were web results that users could manually subscribe to. Anyone was allowed to make a new Subscribed Link, and did not necessarily need knowledge on how to create a feed, as a basic link could be created. Subscriptions were then available in a special directory.


Topics are specific areas of search, which can be developed by people with knowledge of a certain subject. These topics are then displayed at the top of relevant Google web searches, so the user can refine the searches to what they want.[7] Currently, there is a limited number of topics that Google is wanting to develop, namely Health, Destination Guides, Autos, Computer games, Photography and Home Theater.

One of the topics with many contributions is Health. They include the National Library of Medicine, Centers for Disease Control and Prevention, Health On the Net Foundation, Harvard Medical School, Mayo Clinic and others.

Google CSE's may offer better topical search results than the standard Google search.

See also


  1. ^ "The Anatomy of a Large-Scale Hypertextual Web Search Engine". Computer Science Department, Stanford University, Stanford, CA. Retrieved January 27, 2009.
  2. ^ Signorini, A; Gulli, A. "The Indexable Web is More than 11.5 billion pages" (PDF). Retrieved 31 July 2014.
  3. ^ "The Power of Google Search is Now Customizable". Google News. Retrieved 27 August 2015.
  4. ^ "Google Custom Search". Wordpress. Retrieved 31 July 2014.
  5. ^ "AdSense Custom Search Ads". Google. Retrieved 31 July 2014.
  6. ^ Eustace, Alan (2011-09-02). "Official Blog: A fall spring-clean". Retrieved 2013-06-14.
  7. ^ "Custom Search Advanced Topics". Google. Retrieved 31 July 2014.

External links


Blackle is a website powered by Google Custom Search and created by Tony heap of Heap Media, which aims to save energy by displaying a black background and using grayish-white font color for search results. Blackle claims having saved over 7 MWh of electrical energy as of February 2019, a claim under public dispute. For comparison, the average American household consumes 11 MWh of electrical energy per year.


Forestle was an ecologically inspired search engine created by Christian Kroll, Wittenberg, Germany, in 2008 and discontinued in 2011. Forestle supported rainforest conservation through donations of ad revenue and aimed to reduce CO2 emissions. It is quite similar to the search engine Ecosia, which plants new trees with its ad revenue. Forestle was briefly associated with Google before associating with Yahoo.

Google Search

Google Search, also referred to as Google Web Search or simply Google, is a web search engine developed by Google LLC. It is the most used search engine on the World Wide Web across all platforms, with 92.74% market share as of October 2018, handling more than 3.5 billion searches each day.The order of search results returned by Google is based, in part, on a priority rank system called "PageRank". Google Search also provides many different options for customized search, using symbols to include, exclude, specify or require certain search behavior, and offers specialized interactive experiences, such as flight status and package tracking, weather forecasts, currency, unit and time conversions, word definitions, and more.

The main purpose of Google Search is to hunt for text in publicly accessible documents offered by web servers, as opposed to other data, such as images or data contained in databases. It was originally developed by Larry Page and Sergey Brin in 1997. In June 2011, Google introduced "Google Voice Search" to search for spoken, rather than typed, words. In May 2012, Google introduced a Knowledge Graph semantic search feature in the U.S.

Analysis of the frequency of search terms may indicate economic, social and health trends. Data about the frequency of use of search terms on Google can be openly inquired via Google Trends and have been shown to correlate with flu outbreaks and unemployment levels, and provide the information faster than traditional reporting methods and surveys. As of mid-2016, Google's search engine has begun to rely on deep neural networks.Competitors of Google include Baidu and in China; and in South Korea; Yandex in Russia; in the Czech Republic; Yahoo in Japan, Taiwan and the US, as well as Bing and DuckDuckGo. Some smaller search engines offer facilities not available with Google, e.g. not storing any private or tracking information.

Within the US, as of July 2018, Microsoft Sites handled 24.2 percent of all search queries in the United States. During the same period of time, Oath (formerly known as Yahoo) had a search market share of 11.5 percent. Market leader Google generated 63.2 percent of all core search queries in the United States.

Gwardia Katowice

Gwardia Katowice is a Polish sports club from Upper Silesia, sponsored by the Katowice police department. It was founded in 1924 in the Second Polish Republic under the name Policyjny Klub Sportowy Katowice (Police Sports Club Katowice) which was changed into the current name after World War II. In the interwar period the club was famous for its swimmers (numerous champions of Poland) and fencers. The club adopted its current name Gwardia Katowice in 1949.


HyperPhysics is an educational website about physics topics.

The information architecture of the website is based on HyperCard, the platform on which the material was originally developed, and a thesaurus organization, with thousands of controlled links and usual trees organizing topics from general to specific. It also exploits concept maps to facilitate smooth navigation. HyperPhysics is hosted by Georgia State University and authored by Georgia State faculty member Dr. Rod Nave.Various teaching and education facilitators make use of HyperPhysics material through projects

and organizations, and also publishers which use SciLinks.

Intergovernmental organization

An intergovernmental organization or international governmental organisation (IGO) is an organization composed primarily of sovereign states (referred to as member states), or of other intergovernmental organizations. Intergovernmental organizations are called international organizations, although that term may also include international non-governmental organization such as international nonprofit organizations or multinational corporations.

Intergovernmental organizations are an important aspect of public international law. IGOs are established by a treaty that acts as a charter creating the group. Treaties are formed when lawful representatives (governments) of several states go through a ratification process, providing the IGO with an international legal personality.

Intergovernmental organizations in a legal sense should be distinguished from simple groupings or coalitions of states, such as the G7 or the Quartet. Such groups or associations have not been founded by a constituent document and exist only as task groups.

Intergovernmental organizations must also be distinguished from treaties. Many treaties (such as the North American Free Trade Agreement, or the General Agreement on Tariffs and Trade before the establishment of the World Trade Organization) do not establish an organization and instead rely purely on the parties for their administration becoming legally recognized as an ad hoc commission. Other treaties have established an administrative apparatus which was not deemed to have been granted international legal personality.


Jurn is a free online search tool for the finding and downloading of free full-text scholarly works. It was established in a public online open beta version in February 2009, initially for finding open access electronic journal articles in the arts and humanities. An additional public directory of web links to the indexed journals was placed online in mid 2009. The Jurn search service and directory has since been continually updated and cleaned. In March 2014 Jurn expanded to index topics in science, biomedicine, business and economics, plus selected university repository services for open access deposit papers and full-text theses. Jurn is powered by a Google Custom Search Engine (CSE) and is run without any adverts.

LiLi Li of Georgia Southern University described Jurn as a "recognised academic search engine" in his 2014 book Scholarly Information Discovery in the Networked Academic Learning Environment, and included a paragraph describing the Jurn service. Jurn also has a descriptive entry in Marcus P. Zillman's annotated White Paper "Academic and Scholar Search Engines and Sources". In 2015 University of Maryland librarian Matthew Testa tested JURN alongside Google Scholar and he concluded that... "JURN can be an effective way to find OA [open access] content from a variety of sources".At 2016 Jurn is web linked by a number of academic and government libraries, including the Central Library of the European Commission, Jesus College, University of Cambridge, University of California and Princeton University Library.


KidRex is a child-safe search engine powered by Google Custom Search. The site utilizes Google SafeSearch and maintains its own database of inappropriate websites and keywords. The site has a colorful hand-drawn crayon and colored marker design. Time magazine put KidRex on its list of the top 50 websites of 2013 and compared it to Google.

Kiddle (search engine) is a web search engine and online encyclopedia emphasizing safety for children. It is powered by Google Custom Search and employs SafeSearch, with minor refinements. The user enters topics in the search toolbar, and Kiddle returns and ranks its findings, with its first three results being suitable for children to read as well as of an easy reading level. During its release in 2016, it was criticized for blocking certain search terms with regards to sexuality, and has since unblocked them.


KidzSearch is a search engine and web portal powered by Google Custom Search with academic autocomplete that emphasizes safety for children. Search results are customized by pushing age-appropriate content higher up in the results. Large thumbnails are provided to make results more visual and easier to understand. It has many features, and like kiddle, boasts an online encyclopedia with 200,000 articles powered by Wikimedia. KidzSearch is used in over 1,000 schools a day, and is visited by some 4 million people a month. KidzSearch was rated by Common Sense Media 3 stars as a top learning site. Their main focus is on older elementary students and schools. They partnered with Safe Search Kids to host their search results. Safe Search Kids is also a web portal.


LPMud, abbreviated LP, is a family of MUD server software. Its first instance, the original LPMud game driver, was developed in 1989 by Lars Pensjö (hence the LP in LPMud). LPMud was innovative in its separation of the MUD infrastructure into a virtual machine (known as the driver) and a development framework written in the LPC programming language (known as the mudlib).

List of Google products

The following is a list of products and services provided by Google.

Outline of Google

The following outline is provided as an overview of and topical guide to Google:

Google – American multinational technology company specializing in Internet-related services and products that include online advertising technologies, search, cloud computing, software, and hardware.

Principle of least astonishment

The principle of least astonishment (POLA; and variations of "principle/law/rule of least astonishment/surprise") applies to user interface and software design. A typical formulation of the principle, from 1984, is: "If a necessary feature has a high astonishment factor, it may be necessary to redesign the feature."More generally, the principle means that a component of a system should behave in a way that most users will expect it to behave; the behavior should not astonish or surprise users.

Ramanathan V. Guha

Ramanathan V. Guha (born 1965) is the creator of widely used web standards such as RSS, RDF and He is also responsible for products such as Google Custom Search. He was a co-founder of Epinions and Alpiri. He currently works at Google as a Google Fellow.

Retina medical search

Retina medical search is a free search engine for doctors or medical students. It is a Google custom search engine and the actual coverage is unknown. It claims to cover credible physician level documents and categorizes them in various ways.

Search as a service

Search as a service is a branch of software as a service (SaaS), focussed on enterprise search or site-specific web search.

Vik Singh

Vik Singh is the CEO and co-founder of Infer, a leading predictive sales and marketing platform. Vik was previously an American Entrepreneur In Residence at Sutter Hill Ventures. Previously, Vik helped create and architect Yahoo! Search BOSS, an open web search platform. As of April 2009, the number of queries issued through BOSS surpassed the search traffic on Ask and Facebook combined.He developed several supporting BOSS examples such as TweetNews, which Wired (magazine) said "might well be the best mashup we've ever seen", and the Fresh homepage for Delicious (website). MIT's Technology Review listed him as one of the Top 35 under 35 Innovators of 2009 for his contributions to open search. He was also featured in the IC list of 2009 by India Currents.Vik Singh previously worked at Google and Microsoft, both in research and products, helping ship Google Custom Search and Microsoft Windows XPSP2 Wireless Networking. While an undergraduate in college, he worked at Microsoft Research under Jim Gray, a Turing Award Winner for his seminal databases work, co-authoring a publication on data mining the Sloan Digital Sky Survey logs. He has filed 13 patents. Vik graduated from University of California, Berkeley with a Bachelor's in Computer Science.

Yahoo! Search BOSS

Yahoo Search BOSS (Build your Own Search Service) was a Yahoo! Developer Network initiative to provide an open search web services platform.Yahoo discontinued BOSS JSON Search API, BOSS Placefinder API, BOSS Placespotter API and as well BOSS Hosted Search, on March 31, 2016. Yahoo BOSS is succeeded by Yahoo Partner Ads (YPA).


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