Terms and Conditions

The X Window System source code is available under the MIT X Window System License, see http://www.opensource.org/licenses/mit-license.php . See each file within each release for specific copyright holders, a sample file for X11R6.6 is shown below:

X11R6.6

COPYRIGHT AND PERMISSION NOTICE

Copyright (c) 1999,2000,2001 Compaq Computer Corporation
Copyright (c) 1999,2000,2001 Hewlett-Packard Company
Copyright (c) 1999,2000,2001 IBM Corporation
Copyright (c) 1999,2000,2001 Hummingbird Communications Ltd.
Copyright (c) 1999,2000,2001 Silicon Graphics, Inc.
Copyright (c) 1999,2000,2001 Sun Microsystems, Inc.
Copyright (c) 1999,2000,2001 The Open Group

All rights reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, provided that the above copyright notice(s) and this permission notice appear in all copies of the Software and that both the above copyright notice(s) and this permission notice appear in supporting documentation.

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 OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR 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.

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

X Window System is a trademark of The Open Group.