Full-featured Web search engine. GPL

mnoGoSearch 3.3.4 you can use to build search engines over HTTP, HTTPS, FTP, and NTTP servers, local files, and database text fields. It supports many database systems as backends. It has built-in support for XML, HTML, and text, and external converters can be used to support other document types. An automatic language/charset guesser for more 70 language/charset combinations is included, along with cluster support, making it possible to distribute data over multiple computers and index huge collections with up to several hundred million documents.