Virtual Network Computing (VNC) is a remote display system which allows you to view and interact with a virtual desktop environment that is running on another computer on the network. Using VNC, you can run graphical applications on a remote machine and send only the display from these applications to your local machine. VNC is platform-independent and supports a wide variety of operating systems and architectures as both servers and clients.

TigerVNC is a high-speed version of VNC based on the RealVNC 4 and X.org code bases. TigerVNC started as a next-generation development effort for TightVNC on Unix and Linux platforms, but it split from its parent project in early 2009 so that TightVNC could focus on Windows platforms. TigerVNC supports a variant of Tight encoding that is greatly accelerated by the use of the libjpeg-turbo JPEG codec.

Incomplete and generally out of date copyright list:

Copyright (C) 1999 AT&T Laboratories Cambridge
Copyright (C) 2002-2005 RealVNC Ltd.
Copyright (C) 2000-2006 TightVNC Group
Copyright (C) 2005-2006 Martin Koegler
Copyright (C) 2005-2006 Sun Microsystems, Inc.
Copyright (C) 2006 OCCAM Financial Technology
Copyright (C) 2000-2008 Constantin Kaplinsky
Copyright (C) 2004-2017 Peter Astrand for Cendio AB
Copyright (C) 2010 Antoine Martin
Copyright (C) 2010 m-privacy GmbH
Copyright (C) 2009-2011 D. R. Commander
Copyright (C) 2009-2011 Pierre Ossman for Cendio AB
Copyright (C) 2004, 2009-2011 Red Hat, Inc.
Copyright (C) 2009-2020 TigerVNC Team
All Rights Reserved.

This software is distributed under the GNU General Public Licence as published by the Free Software Foundation. See the file LICENCE.TXT for the conditions under which this software is made available. TigerVNC also contains code from other sources. See the Acknowledgements section below, and the individual source files, for details of the conditions under which they are made available.

All versions of TigerVNC contain the following programs:

• vncviewer - the cross-platform TigerVNC Viewer, written using FLTK.

  vncviewer connects to a VNC server and allows you to interact with the remote desktop being displayed by the VNC server. The VNC server can be running on a Windows or a Unix/Linux machine.

The Windows version of TigerVNC contains the following programs:

• winvnc - the TigerVNC Server for Windows. winvnc allows a Windows desktop to

  be accessed remotely using a VNC viewer.

WARNING: winvnc is currently unmaintainted and and may not function correctly.

winvnc may not work if the Fast User Switching or Remote Desktop features are in use.

The Unix/Linux version of TigerVNC contains the following programs:

• Xvnc - the TigerVNC Server for Unix. Xvnc is both a VNC server and an X

  server with a "virtual" framebuffer. You should normally use the vncserver script to start Xvnc.

• vncserver - a wrapper script which makes starting Xvnc more convenient.

  vncserver requires Perl.

• vncpasswd - a program which allows you to change the VNC password used to

  access your VNC server sessions (assuming that VNC authentication is being used.) The vncserver script will automatically launch this program if it detects that VNC authentication is in use and a VNC password has not yet been configured.

• vncconfig - a program which is used to configure and control a running

  instance of Xvnc.

• x0vncserver - an inefficient VNC server which continuously polls any X

  display, allowing it to be controlled via VNC. It is intended mainly as a demonstration of a simple VNC server.

This distribution contains zlib compression software. This is:

Copyright (C) 1995-2002 Jean-loup Gailly and Mark Adler

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.

Jean-loup Gailly Mark Adler [email protected] [email protected]

The data format used by the zlib library is described by RFCs (Request for Comments) 1950 to 1952 in the files ftp:https://ds.internic.net/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).

This distribution contains public domain DES software by Richard Outerbridge. This is:

Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge. (GEnie : OUTER; CIS : [71755,204]) Graven Imagery, 1992.

This distribution contains software from the X Window System. This is:

Copyright 1987, 1988, 1998 The Open Group

Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation.

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group.

Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.

All Rights Reserved

Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Digital not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission.

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.