I've been slaving over a hot keyboard for a few days to finish the Inner Drive Extensible Architecture™—the Idea™—release 1.10. I've added two major components to support auditable business objects and money, the latter being much more interesting but a lot simpler to code. For the truly geeky, I've also published a Software Developer Kit (SDK) for your perusal. Some of the documentation may be slightly out of date as I needed to get the bits out sooner than the docs.
If you're extraordinarily geeky, or looking for a great buy-not-build decision, I'm open to licensing and consulting deals.