OpenSearchServer is an open source and high-performance search engine (a.k.a. search server) that provides a collection of high-powered full text search algorithms.
OpenSearchServer supports several document formats, such as HTML/XHTML, XML, PDF, PowerPoint, Word, RTF, plain text, OpenOffice, MP3/4, FLAC, Ogg, etc.
It offers phonetic search, spell-checking, geolocation, search suggestion facility (auto-completion), supports 17 languages, and much more.
Product's homepage
What's New in This Release: [ read full changelog ]
· Phonetic searching, joints, named entities, geo-location, renderer, and more.