GNOME:
http://www.gnome.org/
-Alternatively, Jim Knoble <jmknoble@pobox.com> has written an excellent X11
+Alternatively, Jim Knoble <jmknoble@jmknoble.cx> has written an excellent X11
passphrase requester. This is maintained separately at:
http://www.ntrnet.net/~jmknoble/software/x11-ssh-askpass/index.html