I actually have at least a few hundred interesting and usable FREE synths for windows I harvested from KVR a number of years ago. Including Organized Trio from GSI. An early form of VB3. I have barely tried the first 20 of them. Problem is they are all 32 bit and getting less stable as windows gets updated, I'm not even sure how many still work in windows 11. And the flow of all the freebies died out about 5 years ago. The culture of homemade synths from the synthedit platform that was going on back in the pre 2016 era ended.
It's a shame because I have a couple of really good mellotrons like redtron, that are ridiculously good for free.