Remoter

Remoter, the best remote desktop client for iOS, makes its way into the desktop! Connect to all your VNC (screen sharing), RDP (Windows Remote Desktop), SSH, and Telnet sessions from one app.

Supports audio streaming for OS X and RDP. Multi-monitor support for OS X 10.7 Lion requires RemoterFusion (free download). Remoter is intuitive and very easy to use!.