"Pancake is a shareware bbs system that supports UUCP mail and news, POP/SMTP, chatting, and telnet, among other things. It will run on virtually any Mac and is exceptionally well behaved."
There is a BBS running Pancake 1.3 at obsolyte.com. (Specifically, telnet to 24.18.96.16)
The author, Darrell Turner, writes "The basic story of Pancake was I had used Waffle on a MS-DOS based bbs we ran in High School. I tried Hermes, but was unhappy with it's USENET support, and so I wrote Pancake, the Mac version of Waffle, with a little bit of Telegard and WWIV/Hermes through in. I started when I was 17, and when I was 19 I decided to serve a mission for my church (Church of Jesus Christ of Latter-day Saints) and when I returned, everyone has realtime internet access (not UUCP like before), and BBS's were on the outs. I never finished Pancake entirely, it's has file downloads but for uploads it needs the Communication Toolbox (which barely works)..."