GGMud - http://ggmud.sourceforge.net/
GTK client with most standard features. Win32, OS X, and Linux builds available. |
JamochaMUD - http://www.jamochamud.org
Java client with most standard features. Windows and Linux builds available. |
KildClient - http://kildclient.sourceforge.net/phpwebsite/
GTK+ client with a built-in Perl interpreter. It runs under Windows and Linux. |
MudMagic - http://www.mudmagic.com/mud-client/
Gnome client for linux and windows with plugin support. |
TinTin++ - http://tintin.sourceforge.net
Console mud client, with most standard features. Windows, Mac OS X, and Linux builds available. |