Sphinx is an open-source full-text search engine. It's a standalone software package that provides searching capabilities to client applications. Sphinx was specially designed to integrate well with S... More

Sphinx is an open-source full-text search engine. It's a standalone software package that provides searching capabilities to client applications. Sphinx was specially designed to integrate well with SQL databases and scripting languages; there are built-in connectors for MySQL and PostgreSQL, and it's also possible to index data from any other type of the source through an XML feed. It offers a number of advanced features besides just full-text searching, supports distributed searching, and scales well (up to billions of documents and terabytes of data).  [edit]  Less