TightVNC is a free and open-source remote desktop software server and client application for Linux and Windows.

[5][6] It is possible to watch videos and play DirectX games through TightVNC over a broadband connection, albeit at a low frame rate.

[citation needed] TightVNC includes many other common features of VNC derivatives, such as file transfer capability.

[7] Among notable enhancements are file transfers, support for the DemoForge DFMirage mirror driver (a type of virtual display driver) to detect screen updates (saves CPU time and increases the performance of TightVNC), ability to zoom the picture and automatic SSH tunneling on Unix.

Since the 2.0 beta, TightVNC supports auto scaling, which resizes the viewer window to the remote users desktop size, regardless of the resolution of the host computer.