We have a newly documented feature request, from sales and support, to integrate Crystal Reports into our LAMP product. (It's more like LAPP, really, with Postgres and PHP.)
I have to admit, although I've heard about it from time to time, I've never even seen Crystal Reports in the wild. But the buzz is that it will help sales tremendously if we can support it.
So the question is about what we can do to satisfy the request. Are there APIs and SDKs, protocols and conventions we can use to get tight with Crystal Reports?