In computing, TightVNC is a cross-platform free and open-source remote desktop software application. Constantin Kaplinsky developed TightVNC,[3] using and extending the RFB protocol of Virtual Network Computing (VNC) to allow end-users to control another computer's screen remotely.

Initial releasev1.0 in 2001[1]
Stable release
2.8.27 / October 23, 2019 (2019-10-23)
Written inC, C++, Java[2]
Operating systemMicrosoft Windows, Linux
Available inEnglish[2]
TypeRemote administration
LicenseGNU General Public License GPL v2


TightVNC uses so-called "tight encoding" of areas, which improves performance over low bandwidth connection. It is effectively a combination of the JPEG and zlib compression mechanisms.[4][5] It is possible to watch videos and play DirectX games through TightVNC over a broadband connection, albeit at a low frame rate.

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


TightVNC is cross-compatible with other client and server implementations of VNC; however, tight encoding is not supported by most other implementations, so it is necessary to use TightVNC at both ends to gain the full advantage of its enhancements.[6]

Among notable enhancements are file transfers, support for Windows DFMirage mirror 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.

Derived software


RemoteVNC is a fork of the TightVNC project and adds automatic traversal of NAT and firewalls using Jingle.

TightVNC Portable Edition

The developers have also produced a portable version of the software,[7] available as both U3 and standalone downloads.


TurboVNC is based on the TightVNC 1.3.x, xf4vnc, X.org, and TigerVNC code bases and includes numerous performance enhancements and features targeted at 3D and video workloads.[8]


See also


  1. http://freshmeat.net/projects/tightvnc/releases?page=3
  2. SourceForge.net: TightVNC
  3. Wolf, Chris (2003). "4: Monitoring and Diagnostic Tools". Troubleshooting Microsoft Technologies: The Ultimate Administrator's Repair Manual. The Addison-Wesley Microsoft Technology Series. Boston: Addison-Wesley Professional. p. 121. ISBN 9780321133458. Retrieved 2017-03-22. TightVNC (www.tightvnc.com) is an improved version of AT&T's Virtual Network Computing (VNC) Viewer that was spearheaded by Constantin Kaplinsky.
  4. Fedora Project TightVNC
  5. TightVNC: Comparison Results Archived 2004-03-13 at the Wayback Machine
  6. Introduction to TightVNC
  7. TightVNC Portable Edition
  8. User's Guide for TurboVNC
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.