Hi!
At the moment these certainly aren't a commercial venture, they're a labour of love and born of necessity to improve my own workflow with the ESX. I figured that maybe other ESX users would get a kick out of them.
If I did make a commercial interface I'd definitely be more considerate of Korg's intellectual properties

As is they are hobbyist oddities. I suppose an interface for a machine that AFAIK is no longer in production is pretty niche and may well only be of interest to a few ESX fanatics who hang around here, electribe forum and livepa.
These are a quick and dirty attempt to see if my ideas about NRPN control could work in practice and I'm quite pleased with the results. My ultimate objective is to make a full midi cc to NRPN interface for the ESX that incorporates both of these modules and a few other tricks that i have in mind.
If anybody else is interested in working with me towards a fully functioning VST I'm very open to ideas and collabs.
The beast interface sends a trigger to drum part 1 along with an NRPN value for the start point that can be set up on the interface (currently 8 slots available. I wanted 16, but it started behaving oddly), with the result being exactly like playing a sliced sample with polyphony down at 1.
The PITCH sends a trigger to drum part 2 with an NRPN value for the pitch mod (roughly) corresponding to the input note. I say roughly because the pitch range is 4 octaves, which are 48 notes, but have values of 0-127. 48 into 128 as a whole number does not go, so we're losing a bit of resolution on the tuning.
despite a few shortcomings, they're a lot of fun, I really enjoyed making them too. I see that you're an ESX user, I'd be really interested in your thought on them if you could find the time to give 'em a spin.