Troublemaker, from Bram Bos, was updated with a new "modded" version of the app to emulate some of the mods people do to TB-303s. If you have Troublemaker installed you'll now see a Troublemaker Modded available when loading AUv3s into your host.
What's new in Troublemaker v1.7:Now includes a used, lightly modded, heavily battered Troublemaker unit that has seen better days. Sounds like its circuits are 30 years old and some components have been bypassed or tinkered with. But, hey, you got it for free so who cares? Look for it in your AUv3 plugin folder.