mRemoteNG - mRemoteNG is a fork of mRemote, an open source, tabbed, multi-protocol, remote connections manager.
PAC Manager - PAC Manager
PuTTY - Popular free terminal application. Mostly used as an SSH client.
SecPanel - SecPanel is an Ssh GUI for Unix.
Royal TS - Royal TS provides easy and secure access to your remote systems
sshmenu - SSHMenu is a GNOME panel applet* that keeps all your regular SSH connections within a single mouse...