[Is there a summary of different APIs per system?]

Hi Ben - I'm most interested in Sage 50 / Peachtree.  Are these API docs for Sage 50 or for a different service? I can't find any mention of what systems they support.

Secondary importance for me is Sage 100 US. 

[Is there a summary of different APIs per system?]

In reviewing these forums, it seems like there are regular questions on what APIs work for different versions of Sage. Is there any master table that shows all the permutations? I'm looking to integrate with a few different versions of the software, and finding it hard to understand what works for Business Cloud versus 50 Cloud Accounting versus 300 versus Intacct etc.. Any pointers would be very helpful.