From the website:

blinkx is the world's largest and most advanced video search engine. Fed by automatic spiders that crawl the web for audio video content and content partnerships with over 200 leading content and media companies, blinkx uses visual analysis and speech recognition to better understand rich media content. Users can search for content, create personal TV channels that automatically splice relevant content together. blinkx is a privately-held firm, based in San Francisco and London and was founded in early 2004 by Suranga Chandratillake.  

KinoSearch is a loose port of the Java search engine library Apache Lucene, written in Perl and C. The archetypal application is website search, but it can be put to many different uses.

Features

• Extremely fast and scalable - can handle millions of documents
• Incremental indexing (addition/deletion of documents to/from an existing index).
• Full support for 12 Indo-European languages.
• Support for boolean operators AND, OR, and AND NOT; parenthetical groupings, and prepended +plus and -minus
• Algorithmic selection of relevant excerpts and highlighting of search terms within excerpts
• Highly customizable query and indexing APIs
• Phrase matching
• Stemming
• Stoplists