Mvcskel is a project mainly written in PHP, it's free.
PHP5 Web Development Framework
MvcSkel is open source web development framework written in PHP5. It provides good basis for professional web developers because it integrates industry leading practices and libraries. Framework developed and maintained by Whirix. We used this solution in many projects, that's why we strongly believe that MvcSkel will be useful for professional web development.
More details available on project Wiki pages