ConnectBot is a free, open-source, Secure Shell client for Android that can be used to administer any Linux or Unix-based cloud machine from the Command Line Interface. It also supports Telnet and local (Android device) connections. ConnectBot supports simultaneous SSH sessions, secure tunnels, and copy/paste operations between other Android apps. It supports popular emulation modes, Terminal bell alerts, and it has an adjustable scroll-back size.
ConnectBot can be integrated with Decaf Amazon EC2, providing the ability to connect to your instances via SSH directly from a shortcut within Decaf.