Hey, On Mon, Mar 15, 2021 at 04:16:53PM +0100, James Maxwell wrote: > If I have a commercial Qt license, can I still develop for projects > which are going to be released under LGPL where also other people > don't have a Qt license (of course assuming we only use LGPL Qt and > nothing of the commercial only parts). > > I am afraid of the following: "(ii) use Licensed Software for creation of > any software created with or incorporating Open Source Qt" > what does licensed software mean? If I have Qt commercial, do I always use > Qt under commercial license and thus cannot create any software using open > source qt?
The license text has a definition of "Licensed Software". Most notably, "Licensed Software does not include [...] Open Source Qt.". FWIW the licensing FAQ[1] says: Mixing Qt commercial licenses with Qt open-source licenses *in one project/product* is not permitted. (emphasis mine), and in the earlier discussion here[2], Tuukka Turunen said: For completely independent projects/products this is fine. Note that these really should not be same or in practice the same - or in any way depending, relating, using etc each other as defined in the license agreement. That all being said, I'm not a lawyer, and I'm not associated with The Qt Company in any way. Florian [1] https://www.qt.io/faq/2.7.-can-some-developers-in-our-team-working-on-the-same-project-use-open-source-version-of-qt-and-some-developers-use-commercial-version-of-qt [2] https://lists.qt-project.org/pipermail/interest/2020-March/034786.html -- m...@the-compiler.org | https://www.qutebrowser.org https://bruhin.software/ | https://github.com/sponsors/The-Compiler/ GPG: 916E B0C8 FD55 A072 | https://the-compiler.org/pubkey.asc I love long mails! | https://email.is-not-s.ms/
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