Generative Piping design automation application in Creo Parametric 4.0

Could you recommend vendors offering Generative Piping design automation solutions for creating piping assemblies and drawings with minimal human intervention in Creo Parametric 4.0? Please provide details if anyone is using customized piping applications/extensions instead of the default Creo piping application.

( Note : not default piping application & not spec driven piping method )