http://www.macnn.com/articles/02/03/12/pennmush.1.74p15:/
PennMUSH 1.74p15: MUD server for the Mac
updated 09:45 am EST, Tue March 12, 2002
",
0, 0);
Dan Williams has released PennMUSH 1.74p15 for Classic, which brings the Multi-User Dungeon (MUD) server to Mac: "Users connect to the server with a Telnet or MUD client and interact with other players in a virtual, text-based world. Mac OS X/Darwin binaries will follow for those who don't have the MacOS X Developer tools or the time to compile themselves for X."
