We are proud to open our Invasive Software Composition platform for a public beta. In short, it's a compiler for Model Driven Architecture based on Domain-Driven Design.
Beta is running on top of Postgres. For now we have opened up PHP, with Java and C# support coming by the end of the month.
What is it?
You write your application model in a DSL - which is meant to be easy to read. Our DSL Platform takes your model, migrates your database and gives you back a compiled library to use (PHP for web, Java for Android, etc...) Objects in that library will map 1:1 to DSL you have provided and will be type safe; even PHP is kind of type-safe ;).
If you are familiar with DDD you should feel right at home writing DSL; if not, our docs should help you to quickly get started.