trivial

https://github.com/johnbintz/trivial

For those who are using PHP to build their sites and want a very simple framework in which to organize their files, trivial is the solution. It's one PHP file that can include a few other pre-determined PHP and HTML files based on the request URI. This very simple division of content, actions (controllers), and views allows for multiple people to easily work on a smaller project without the overhead of a larger framework.