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Are Qt Open Source and Qt Commercial different.



  • Sorry for this silly question.
    But I am confused because Qt Open Source and Qt Commercial are maintained by Qt Company.

    Question 1: Are code of Qt Open Source and Qt Commercial different and independent of each other or they are same except different licenses.
    Question 2: If answer is same. Are code changes, bug fixes and patches from Qt Open Source branch are pulled in Qt Commercial branch.

    Thanks for reading this silly question.


  • Lifetime Qt Champion

    @AshishDev

    1. No, they are same
    2. Yes

    Keep in mind that there are now differences how LTS releases are handled, see https://www.qt.io/blog/qt-offering-changes-2020
    Not all parts of Qt are Open Source.



  • That's why I do not use QT and QT Creator.
    They take the code from the open source branch and sell it with a commercial license.

    Is it not a violation of the GPL license?


  • Moderators

    @AshishDev said in Are Qt Open Source and Qt Commercial different.:

    They take the code from the open source branch and sell it with a commercial license.

    They don't "take code from the open source branch". They make the code available under multiple licenses (GPL or LGPL or Commercial).

    Users can choose which license they want to use. Different licenses come with different freedoms and obligations:

    • If you choose the GPL license, then one of your obligations is to license your own software under the GPL.
    • If you choose the commercial license, then one of your obligations is to pay the Qt Company.

    Is it not a violation of the GPL license?

    I don't see any violations here.


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