Source : Free On-Line Dictionary of Computing

LessTif
     
         The {Hungry Programmers}' version of {OSF}/{Motif}.
        It will be source code compatible with Motif, meaning that the
        same source will compile with both libraries and work exactly
        the same.  All the programming is being done with no reference
        to the header files for the motif widgets, so that LessTif can
        be distributed as {free software}.
     
        {Home (http://www.hungry.com/products/lesstif)}.
     
        (1995-03-20)