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Q Public License (QPL)

The X11 version of the Qt Open Source Edition is available under both the Q Public License (QPL) and the GNU General Public License. The QPL is provided only for historical reasons; we strongly encourage Free/Open Source software developers to use Qt under the GPL.

For development non-free/proprietary software, the Qt Commercial Edition is available. It has a normal commercial library license, with none of the special restrictions of the QPL or the GPL.

    THE Q PUBLIC LICENSE
    version 1.0

    Copyright (C) 1999-2006 Trolltech AS, Norway.
    Everyone is permitted to copy and distribute this license document.

    The intent of this license is to establish freedom to share and change the
    software regulated by this license under the open source model.

    This license applies to any software containing a notice placed by the
    copyright holder saying that it may be distributed under the terms of
    the Q Public License version 1.0. Such software is herein referred to as
    the Software. This license covers modification and distribution of the
    Software, use of third-party application programs based on the Software,
    and development of free software which uses the Software.


                                     Granted Rights

    1. You are granted the non-exclusive rights set forth in this license
       provided you agree to and comply with any and all conditions in this
       license. Whole or partial distribution of the Software, or software
       items that link with the Software, in any form signifies acceptance of
       this license.

    2. You may copy and distribute the Software in unmodified form provided
       that the entire package, including - but not restricted to - copyright,
       trademark notices and disclaimers, as released by the initial developer
       of the Software, is distributed.

    3. You may make modifications to the Software and distribute your
       modifications, in a form that is separate from the Software, such as
       patches. The following restrictions apply to modifications:

         a. Modifications must not alter or remove any copyright notices in
            the Software.

         b. When modifications to the Software are released under this
            license, a non-exclusive royalty-free right is granted to the
            initial developer of the Software to distribute your modification
            in future versions of the Software provided such versions remain
            available under these terms in addition to any other license(s) of
            the initial developer.

    4. You may distribute machine-executable forms of the Software or
       machine-executable forms of modified versions of the Software, provided
       that you meet these restrictions:

         a. You must include this license document in the distribution.

         b. You must ensure that all recipients of the machine-executable forms
            are also able to receive the complete machine-readable source code
            to the distributed Software, including all modifications, without
            any charge beyond the costs of data transfer, and place prominent
            notices in the distribution explaining this.

         c. You must ensure that all modifications included in the
            machine-executable forms are available under the terms of this
            license.

    5. You may use the original or modified versions of the Software to
       compile, link and run application programs legally developed by you
       or by others.

    6. You may develop application programs, reusable components and other
       software items that link with the original or modified versions of the
       Software. These items, when distributed, are subject to the following
       requirements:

         a. You must ensure that all recipients of machine-executable forms of
            these items are also able to receive and use the complete
            machine-readable source code to the items without any charge
            beyond the costs of data transfer.

         b. You must explicitly license all recipients of your items to use
            and re-distribute original and modified versions of the items in
            both machine-executable and source code forms. The recipients must
            be able to do so without any charges whatsoever, and they must be
            able to re-distribute to anyone they choose.

         c. If the items are not available to the general public, and the
            initial developer of the Software requests a copy of the items,
            then you must supply one.


                                Limitations of Liability

    In no event shall the initial developers or copyright holders be liable
    for any damages whatsoever, including - but not restricted to - lost
    revenue or profits or other direct, indirect, special, incidental or
    consequential damages, even if they have been advised of the possibility
    of such damages, except to the extent invariable law, if any, provides
    otherwise.


                                      No Warranty

    The Software and this license document are provided AS IS with NO WARRANTY
    OF ANY KIND, INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS
    FOR A PARTICULAR PURPOSE.

                                     Choice of Law

    This license is governed by the Laws of Norway. Disputes shall be settled
    by Oslo City Court.