libSM: libSM (X Session Management Library) libSM: libSM: libSM is part of X11. libSM: libSM: For more information about the X.Org Foundation (the providers of the libSM: X.Org implementation of the X Window System), see their website: libSM: libSM: http://www.x.org libSM: libSM: libSM: