Gourt > Computers > Open Source > Search Engines
A search engine or search service is a program designed to help find information stored on a computer system such as the World Wide Web, inside a corporate or proprietary network or a personal computer. The search engine allows one to ask for content meeting specific criteria (typically those containing a given word or phrase) and retrieves a list of references that match those criteria. Search engines use regularly updated indexes to operate quickly and efficiently. Without further qualification, search engine usually refers to a Web search engine, which searches for information on the public Web. Other kinds of search engine are enterprise search engines, which search on intranets, personal search engines, which search individual personal computers, and mobile search engines. However, while different selection and relevance criteria may apply in different environments, the user will probably perceive little difference between operations in these. Some search engines also mine data available in newsgroups, large databases, or open directories like DMOZ.org. Unlike Web directories, which are maintained by human editors, search engines operate algorithmically. Most web sites which call themselves search engines are actually front ends to search engines owned by other companies.
History
The very first tool used for searching on the Internet was Archie. (The name stands for "archive" without the "v", not the character from the 'Archie' comic book series). It was created in 1990 by Alan Emtage, a student at McGill University in Montreal. The program downloaded the directory listings of all the files located on public anonymous FTP (File Transfer Protocol) sites, creating a searchable database of filenames.
While Archie indexed computer files, Gopher indexed plain text documents. Gopher was created in 1991 by Mark McCahill at the University of Minnesota. (The program was named after the school's mascot). Because these were text files, most of the Gopher sites became Web sites after the creation of the World Wide Web.
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Associative Indexing Service - An application for easy adding of keywords for archives and any resources for fast future access. It is an extension of associative memory, associative helper and also may be used as a personal search engine.
Meta Description: [ Indexing Service - personalized browser ]
BDDBot - A web robot, search engine and web server written in Java and available under GPL. Includes related resources. [Project no longer actively updated]
DataparkSearch Engine Tool - Open source search engine tool released under GPL and designed to organize search within a website, group of websites, intranet or local system.
Meta Description: [ DataparkSearch Engine is a full-featured open sources web-based search engine released under the GNU General Public License and designed to organize search within a website, group of websites, intranet or local system. ]
Egothor - A cross-platform, full-featured text search engine written entirely in Java. It can be configured as a standalone engine, metasearcher, peer-to-peer HUB or used as a class library.
JXTA Search - A distributed search system, designed for peer to peer networks and web sites.
Meta Description: [ SourceCast, a collaborative software development platform from CollabNet ]
KDE GUISearch - Allows searching the KDE project CVS repository using GUISearch, a new kind of tool for finding code by looking at the applications' GUI text messages (e.g., Undo) and returning associated callbacks/slots (e.g., slotUndo()).
Nutch - Effort to implement a prototype of an open source web-search engine.
Open Source Search - Resources, ideas and news site for developing next generation open source search engines. Includes relevant source libraries and white papers.
Open, Distributed Web Search - Article that discusses the concepts of an open source, community-run, distributed web search service. One possible architecture is presented, although no working code or implementation exists.
OpenWebSpider - An open source web spider and search engine. Includes demo, source code and screenshots.
Meta Description: [ OpenWebSpider - Open Source Web Spider and Search Engine ]
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Oxyus - An open source search engine written in Java, aimed to provide a search button for websites. Includes related project news.
Search Tools Listing: Open Source Search Engines - A listing of open source indexers, including links to related articles.
Meta Description: [ Listing of open source search engine projects (generally free). ]
Sourcebank - Full-text search engine for source code.
Meta Description: [ Search Sourcebank for java source code, visual c++, vb, artificial intelligence, game programming, perl, matlab, java game, java applets, java programming and c++ tutorials. ]
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