Tor N. Johnson

Use sphinx indexes to search content and provide related posts functionality. This is intended for developers and theme creators who require customized implementations, multi-index support, custom weighting, and granular control of how results are returned.
The search mechanism is also able to search taxonomies along with \’post\’ type content.
In addition to providing search facilities, this plugin provides related content results.
It does not provide wizards to create indexes, sphinx configuration files, or sphinx itself.
This plugin is idea for users who wish to custom tune their sphinx indexes.
It does NOT require that the WordPress plugins folder be write-able or have any elevated permissions.

Sphinx Search & Related Omnibus

Use sphinx search to search content and provide related posts.

prettyboymp

Sphinx is a GPL version 2 full-text search engine with the ability to run high speed search queries. It can give users a more robust search experience by providing better phrase and word matching to better sort results by relevance. This plugin integrates Sphinx’s search capabilities to replace the normal search that WordPress provides.

WP Sphinx Search

Adds Sphinx integration to WordPress' search capability.

Sphinx Search & Related Omnibus vs WP Sphinx Search