Source : Free On-Line Dictionary of Computing

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)