I used DESQview to run a multi-node BBS back in the day. I tried using Windows 3.1 but it was dog slow in comparison.
So, Wildcat! or PC-Board?
I think Renegade's non-warez scene competition was TAG, WWIV, Wildcat and (of course) Telegard. I kind of liked all of them for various reasons!
Edit: my first BBS ran on an Atari 800XL with software written by Jeff Minter. Had to hack up a ring detector for the lame Atari 1200 baud modem. Lol!