Kosearch is a project mainly written in ..., it's free.
Kohana module to integrate Zend Lucene Search into Kohana PHP framework
kosearch iss a Search module for Kohana PHP. More specifically, it's an implementation of Zend (Lucene) Search, a file-based search/index solution. kosearch provides a simple way to index and search Models. It's perfect for a web site that might contain news, products etc. kosearch also exposes the underlying Zend libraries so that other things can be indexed - PDFs, web pages, Word docs etc.
The kosearch module has been written for, and tested against Kohana 2.3.4
The module includes a sample application that demonstrates and explains how to sue the module
To get up and running:
The example explains where to download the necessary 3rd party Zend libraries etc.
kosearch is developed and maintained by badlydrawntoy - http://www.badlydrawntoy.com