SynthMaster and GarageBand are two more that immediately come to mind. Have you gotten the expansions for Module. I also grabbed Roland Sound Canvas. Haven't messed with it yet. I used to have it on my DAW PC as a VSAt back when I was running Windows XP. It doesn't like the newer versions of Windows. Korg's iM1 can cover a lot of bases.

Kronos 88 | MODX7 | KeyLab 61 | CPS SSv3 | MacBook Pro | MainStage | More VSTs than I'll ever figure out