ServerAuth - Website Management, Server Management, SSH Access Control and so much more! ServerAuth helps software agencies and development teams manage server access and security and deploy their sites to servers automatically. Now with 1-Click WordPress Setup!
xCute - Sending commands to a server can be as simple as sending a text message to a friend.
MobileTerminal - A terminal emulator for your jailbroken iPhone.
MidpSSH - MidpSSH is an SSH and Telnet client for MIDP 1.0 / 2.
Blink Shell - Super-fast and highly configurable, professional-grade terminal for iOS.
PuTTY - Popular free terminal application. Mostly used as an SSH client.