MLWorks 2.0 runs under the X Window System with Motif, and under Sun's OpenWindows for Solaris. MLWorks also supports the Common Desktop Environment (CDE).
MLWorks 2.0 for Linux runs under the X Window System with Motif. The Motif libraries are statically linked into the MLWorks runtime. You do not need to own Motif in order to run MLWorks.