Hi,
Please read the commercial license agreement and the licensing FAQ. The
restriction has nothing to do with open-source licensing. It is about a
company, who is using a commercially licensed Qt not to use parts of the same
licensed Qt product under open-source license. If there was no such
restriction, a company could have a team of 10 developers, but only 1 or 2
commercial license for Qt.
Yours,
Tuukka
From: Jean-Michaël Celerier <jeanmichael.celer...@gmail.com>
Date: Friday 27. March 2020 at 17.46
To: Tuukka Turunen <tuukka.turu...@qt.io>
Cc: Giuseppe D'Angelo <giuseppe.dang...@kdab.com>, "interest@qt-project.org"
<interest@qt-project.org>
Subject: Re: [Interest] Qt Creator licensing for companies with Qt Commercial
developers
> Answer to this is: No, it is not allowed to mix commercial "Licensed
> Software" and the open-source versions provided by The Qt Company in the same
> project.
What about open-source versions provided by another distributor, e.g. someone
doing apt install qtcreator ?
Also how is that compatible with this part of the Qt Creator license ?
https://code.qt.io/cgit/qt-creator/qt-creator.git/tree/LICENSE.GPL3-EXCEPT#n493
Best,
Jean-Michaël
On Fri, Mar 27, 2020 at 4:24 PM Tuukka Turunen
<tuukka.turu...@qt.io<mailto:tuukka.turu...@qt.io>> wrote:
Hi,
This seems to become a longer thread than I envisioned, as apparently my
original response was not clear enough.
In general, if there are any questions or concerns related to licensing, check
the FAQ: https://www.qt.io/faq/
If you are looking for advise on licensing, I recommend either to read the FAQ
or consult a lawyer. While everyone here tries their best to give good advice,
it is possible that some incorrect information or interpretation is presented
(because licensing can be a difficult topic).
Anyways, I'll now explain again the answer to the original question asked. The
question was, as I understood it, "Is it allowed that people working in a
project use commercially licensed Qt and some other persons in the same project
who do not develop Qt use open-source licensed Qt tools?"
Answer to this is: No, it is not allowed to mix commercial "Licensed Software"
and the open-source versions provided by The Qt Company in the same project.
This is a restriction coming from the commercial license agreement:
https://www.qt.io/terms-conditions/
The basic rule of thumb is: Don't mix. Use either only commercial or only
open-source versions of items provided by The Qt Company.
Yours,
Tuukka
On 27.3.2020, 16.26, "Interest on behalf of Giuseppe D'Angelo via Interest"
<interest-boun...@qt-project.org<mailto:interest-boun...@qt-project.org> on
behalf of interest@qt-project.org<mailto:interest@qt-project.org>> wrote:
On 27/03/2020 15:03, Tomas Konir wrote:
>
> Sorry for possible misunderstanding, but i think, that original question
> was little different.
> Question was:
>
> There is company, where are two developer groups:
> Group1: Use QtCreator and works with QT libraries (and works with other
> code which not use QT libraries). All users have Commercial License.
> Group2: Would like to use QtCreator and not use QT libraries (they
> working only with QT unrelated code). The want use QtCreator only as IDE
>
> Can both groups use QtCreator?
> I thought, that using QtCreator as IDE is not conditioned with having QT
> Commercial license.
The only difference that comes to mind is that the first group can use
Qt Creator under its commercial license, which may come with some extra
features (not exactly sure of which ones, at this particular point in time).
The second group can instead just use Qt Creator under its open source
license. The open source license of Qt Creator itself does NOT extend in
any way to the software you develop (cf. the GPL FAQ).
HTH,
--
Giuseppe D'Angelo |
giuseppe.dang...@kdab.com<mailto:giuseppe.dang...@kdab.com> | Senior Software
Engineer
KDAB (France) S.A.S., a KDAB Group company
Tel. France +33 (0)4 90 84 08 53, http://www.kdab.com
KDAB - The Qt, C++ and OpenGL Experts
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