Kohana-doctrine is a project mainly written in PHP, it's free.
Kohana 3.1 module to integrate Doctrine 2 ORM
Kohana 3.1 module to integrate Doctrine ORM 2.0.6.
Download Doctrine 2 and put it in /vendor: http://www.doctrine-project.org/downloads/DoctrineORM-2.0.6-full.tar.gz
Attribution 3.0 Unported (CC BY 3.0)