rxvt-unicode is a clone of the well known terminal emulator rxvt, modified to store text in Unicode and to use locale-correct input and output. It also supports mixing multiple fonts at the same time, including Xft fonts, real transparency, and an optional embedded Perl interpreter that allows you to extend your terminal easily.
ClusTerm is used to SSH into a cluster of systems and execute the same command on all the systems. It combines a number of Gnome Terminal Widgets (VTE) in a single graphical window and copies the input to one terminal to all other terminals. It shows the differences between different terminals. Different layouts: table, row, column, and notebook. It is a GNOME application based on libvte.
rdesktop Console is a Perl/Tk based utility for Linux to work with multiple rdesktop servers. It works with rdesktop 1.1.0 from www.rdesktop.org to manage multiple sessions for logging into Windows NT and 2K Terminal Servers. It allows creation and management of a simple list of servers and a default resolution for the terminal windows.