EP> I know of some, but I'd like to hear from you about BBS software that   
    EP> you know runs on Linux. Then maybe we can have an FAQ fo this echo.   
      
   Mystic was the first DOS-based package ported to Linux back in the 90s and its   
   still actively developed now (and always has been free).  Its available for   
   Windows, Linux, OSX, and ARM Linux (Raspberry Pi).   
      
   http://www.mysticbbs.com   
      
   Synchronet, BBBS, MBSE, and Daydream are some others I know are still   
   maintained and have Linux versions, although the last two I don't know what   
   their status is.  I can't think of any more off hand.   
      
   --- Mystic BBS v1.10 A52 (Windows)   
    * Origin: Sector 7 [Mystic BBS WHQ] (1:129/215)