SLASH'EM Server - Play using Java telnet or using graphical Gtk+ Hack client. - http://www.forkexec.com/html/slashem-gtk.html
Virgo Vardja - SLASH'EM - "Official unofficial" DOS protected mode version. Overview and executable. - http://www.audentes.ee/~virgo/Nethack/slashem.shtml
Ali's SLASH'EM Page - Spoilers, guidebook, Linux compilation instructions, and links to executables and source. - http://www.juiblex.co.uk/nethack/slashem.html