Ideas evolve. Today's web applications need to be just as easy to extend as they are to build. Frameworkers.org have made that insight the driving force behind Furnace, a flexible framework for developing web applications in PHP. Furnace is inherently model-driven: you construct an information model consisting of objects and their relationships, and Furnace uses that to manage all of the boilerplate needed to quickly get your application up and running.
Furnace is under active development, and collaboration and contributions are more than welcome! Furnace is currently released in an alpha state so set your expectations accordingly. We are working hard on improving it and appreciate your patience and support!