portable VNC viewer
ShowMyPC Free Portable VNC
ShowMyPC; A Free Portable VNC Server and Viewer all in one. This remote desktop sharing software allows for remote PC access, screen sharing, and remote support. The tool utilizes remote access technology in conjunction with a SSH forwarding client, enabling a user to share a desktop using only a password. So there is no need to hand out your IP address.
UltraVNC Viewer Portable
UltraVNC Viewer is an Open Source Portable VNC Viewer. This Virtual Network Computing or (VNC) application works as remote PC access software. The tool lets you administer remote computers using your local mouse and keyboard.
TightVNC Portable VNC Viewer
TightVNC Portable is a popular open source free and portable VNC Viewer that can be stored and run from a USB flash drive. Virtual Network Computing or (VNC) enables a user to view the desktop of a remote machine and control it with a the mouse and keyboard from a local machine as if you were sitting right in front of the remote computer.