Hi,
This clarification is related to independent open-source software. For example
an independent open-source application containing Qt like
https://wiki.wireshark.org/Development/QtShark or independent open-source
library created using Qt such as https://inqlude.org/libraries/vlc-qt.html. If
the software you want to use meets the terms defined, then it is ok. Note
specifically that open-source Qt (including also tools) is not allowed to be
mixed with commercially licensed Qt.
Yours,
Tuukka
From: Ramakanth Kesireddy <[email protected]>
Date: Monday 11. May 2020 at 16.52
To: Tuukka Turunen <[email protected]>
Cc: Bernhard Lindner <[email protected]>, Qt Interest
<[email protected]>
Subject: Re: [Interest] Qt Creator licensing for companies with Qt Commercial
developers
Hi Tuukka,
Does it mean that if we use Qt 5.12.8 LTS commercial license, it is permitted
to use Open source components like third party Qt WebKit module in conjunction
with commercial license?
Could you please let me know in this regard?
Thanks and Regards,
Ramakanth
On Mon, 11 May, 2020, 18:01 Tuukka Turunen,
<[email protected]<mailto:[email protected]>> wrote:
Hi,
We have now clarified the license agreement to allow use of independent
open-source items in conjunction with commercially license Qt.
The updated agreement (version 4.2.3) states:
"Permitted Software" shall mean any (i) open source software (excluding Open
Source Qt) that is a) generally available for public in source code form
without additional cost under any of the licenses approved by Open Source
Initiative as listed on https://opensource.org/licenses; and (b) is in no way,
directly or indirectly, developed by or for or otherwise related to or in the
interest of the Licensee or its Affiliates, or (ii) software The Qt Company has
made available via its Qt Marketplace online distribution channel.
Updated agreement can be found from https://www.qt.io/terms-conditions as well
as from the Qt online installer.
This clarification should clear the usage of independent open-source tools and
libraries containing or developed with Qt. Mixing of open-source Qt framework
and tools with commercially licensed Qt remains forbidden, just like before.
Yours,
Tuukka
On 2.4.2020, 21.17, "Bernhard Lindner"
<[email protected]<mailto:[email protected]>> wrote:
Hi Tuukaa!
> TTT: This part is difficult to generally answer, as it depends how these
are used and
> what these are used for. Intention of the mixing restriction is to
prevent cases where
> someone (e.g. a company) uses the open-source version of Qt in cases
where they should
> use commercial version. Typical example of this is a case where only part
of the
> developers using Qt together would have a commercial license. We are
aware of the fact
> that the way how it is written is such that it might extend further than
the primary
> intention. This is a topic that we do not currently have a proper
solution for.
Then you should find a solution. This puts customers / developers / users
in the situation
that they depend on the goodwill of a for-profit corporation. However,
there is no good
will in a profit-making business.
It must be perfectly clear that development projects are not affected by
the fundamental
use of third-party Qt-based applications.
I probably will not use Qt for new projects and I cannot recommend it (but
I have to add
that this decision is also driven by the fact that the technical priorities
in the Qt
project have not been in line with my priorities for a few years) .
--
Best Regards,
Bernhard Lindner
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