TouchTerm [AppStore, Free]

TouchTerm is a complete and fully-featured SSH terminal application, with an intuitive interface includes:

• Translucent UI support allows typing while using the entire screen for displaying terminal output
• Complete server, connection, and password management
• RSA/DSA public key authentication
• VT100 Terminal Emulation: Use top, screen, emacs, vi -- virtually any console application
• Wi-Fi and EDGE/3G support: access and administer your servers from anywhere
• Full special-key support including Ctrl, Esc, Tab, and arrow keys
• Landscape mode support, configurable font size and color
• A polished, iPhone-standard interface

This application is free for a limited time. The price dropped from $2.99 to 0. Here is AppStore link.