Sphinx is an open source full text search server, designed from the ground up with performance, relevance, and integration simplicity in mind.
Apache Lucene is a high-performance, full-featured text search engine library.
The Lemur Project develops search engines, browser toolbars, text analysis tools, and data resources.
Sphinx is an open source full text search server, designed from the ground up with performance, relevance, and integration simplicity in mind.
Apache Lucene is a high-performance, full-featured text search engine library.
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