Pretty cool. I've not heard of this one before.

I really wish they had a Linux option in the downloads.
Could probably get it working with one of my VST hosts or through Wine, but it can be a gamble sometimes.

Speaking of which, this sort of reminds me of the Bristol Linux Synths app that I tried out as part of KX-Studio. It's classic synths laid out as their hardware in a GUI.
I don't know how accurate the sounds are because I've not had much time on a lot of the old great synthesizers.
I only have a Korg Monologue, but I've been thinking of buying an Arturia Micro-Freak for a while now. I've played those, and I really like them in spite of their non-traditional keys.