Presented below is a list of search engine software.
Commercial
Free
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Apache Lucene
Apache Lucene is a free and open-source software, free and open-source Search engine (computing), search engine Library (computing), software library, originally written in Java (programming language), Java by Doug Cutting. It is supported by the ...
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Apache Nutch
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Apache Solr
Solr (pronounced "solar") is an open-source enterprise-search platform, written in Java. Its major features include full-text search, hit highlighting, faceted search, real-time indexing, dynamic clustering, database integration, NoSQL features ...
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Datafari Community Edition
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DocFetcher
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Gigablast
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Grub
Grub can refer to Grub (larva), of the beetle superfamily Scarabaeoidea, or as a slang term for food. It can also refer to:
Places
* Grub, Appenzell Ausserrhoden, Switzerland
* Grub, St. Gallen, Switzerland
* Grub (Amerang), a hamlet in Bavari ...
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Ht-//Dig
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Isearch
Isearch is open-source text retrieval software first developed in 1994 by Nassib Nassar as part of the Isite Z39.50 information framework. The project started at the Clearinghouse for Networked Information Discovery and Retrieval (CNIDR) of the ...
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Meilisearch
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MnoGoSearch
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OpenSearch
OpenSearch is a collection of technologies that allow the publishing of search results in a format suitable for syndication and aggregation. Introduced in 2005, it is a way for websites and search engines to publish search results in a standard ...
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OpenSearchServer
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PHP-Crawler
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Sphinx
A sphinx ( , grc, σφίγξ , Boeotian: , plural sphinxes or sphinges) is a mythical creature with the head of a human, the body of a lion, and the wings of a falcon.
In Greek tradition, the sphinx has the head of a woman, the haunches o ...
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StrangeSearch
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SWISH-E
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Terrier Search Engine
Vespa*
Xapian
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YaCy
''YaCy'' (pronounced “ya see”) is a free distributed search engine, built on the principles of peer-to-peer (P2P) networks created by Michael Christen in 2003. The engine is written in Java and distributed on several hundred computers, , so-ca ...
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Zettair
Zettair is a compact text search engine for indexing and search of HTML (or TREC) collections. It is an open source software developed by a group of researchers at RMIT University.
Its primary feature is the ability to handle large document coll ...
See also
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Search appliance
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Bilingual search engine
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Content discovery platform
A content discovery platform is an implemented software recommendation platform which uses recommender system tools. It utilizes user metadata in order to discover and recommend appropriate content, whilst reducing ongoing maintenance and develo ...
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Document retrieval Document retrieval is defined as the matching of some stated user query against a set of free-text records. These records could be any type of mainly unstructured text, such as newspaper articles, real estate records or paragraphs in a manual. Us ...
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Incremental search
In computing, incremental search, hot search, incremental find or real-time suggestions is a user interface interaction method to progressively search for and filter through text. As the user types text, one or more possible matches for the text ...
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Web crawler
A Web crawler, sometimes called a spider or spiderbot and often shortened to crawler, is an Internet bot that systematically browses the World Wide Web and that is typically operated by search engines for the purpose of Web indexing (''web spi ...
Lists of software