Search Engines
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Apache Solr
Apache Solr
Open source enterprise search platform
Solr is the popular, blazing fast open source enterprise search platform from the Apache Lucene project. Its major features include powerful full-text search, hit highlighting, faceted search, dynamic clustering, database integration, and rich document (e.g., Word, PDF) handling. Solr is highly scalable, providing distributed search and index replication, and it powers the search and navigation features of many of the world's largest internet sites.
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Index Tank
Index Tank
Open Source Search Platform
IndexTank search engine powers search in Reddit, Social bookmarking site. IndexTank is acquired by LinkedIn and released the project as open source. It includes features like Variables boosts, Facets, Faceted search, Snippeting, Custom scoring functions, Suggest, and Autocomplete.
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Bobo Browse
Bobo Browse
Open Source Faceted Search implementation
Bobo Browse is an information retrieval technology that provides navigational browsing into a semi-structured dataset. Beyond the result set from queries and selections, Bobo Browse also provides the facets from this point of browsing. It provides support to sort documents on fields that have multiple values.
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Compass
Compass
Open source search engine
Compass provides real time search engine built on top of Lucene. It is distributed, transcational, supports Spring MVC, integrates with ORM. Compass provides google-style search, index updates as well as more advanced concepts such as caching and index sharding (sub indexes).
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Constellio
Constellio – Content Search
Open Source Content Search Solution
Constellio is claimed as the first complete Open Source enterprise content search solution. Constellio Open Source Enterprise Search is based on Apache Solr and using Google Search Appliances connectors architecture, it allows, with a single click, to find all relevant content in your organization (Web, email, ECM, CRM etc.).
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