A PHP MVC framework.
I'm unlikely to pursue this because I prefer to write Python these days but I've published Bene on Github as a record of the efforts I made to create this framework. Of particular note is JDOS (JSON Domain Object Syntax), which was developed to create a uniform way of defining a project's models. By adding a generator JDOS could be integrated into any framework (Rails, Django, etc).
If you find it helpful, please let me know!