l-soft

from The Free On-line Dictionary of Computing (8 July 2008)

L-Soft

   An international corporation formed by Eric Thomas, the author
   of {Listserv}, to develop it and port it to platforms other
   than the {IBM} {VM} {operating system}, including {Unix}.
   Listserv has been enhanced to use both the {Internet} and
   {BITNET}.

   (1995-02-22)