Remote Helpdesk 

Provide support to all your customers by remote control. Remote Helpdesk can be started from a shortcut to a Web or file server and runs without installation. A single license includes unlimited clients.
remote helpdesk support remote control pc remote control remote control software pc anywhere vnc terminal server transfer files

NetSupport Manager - PC Remote Control 

Perform remote support and management on multiple systems simultaneously over a LAN, WAN and the Internet with this PC remote control software.New Features include Linux and Pocket PC support, Monitor Mode,a whiteboard feature and record and replay
pc remote control software asset management secure remote desktop access pocket pc dynamic inventory remote file transfers mobile computing system monitoring lan wan remote deployment linux