I am developing software with a non profit organization and we would like to use the Qt framework to provide a GUI. This will be open source and free for everyone, for ever. Will we need to purchase a commercial Qt license?

  • 5
    Does this answer your question? License for open source application based on Qt
    – Flux
    Aug 29, 2022 at 14:25
  • The thing I'm concerned about is that this project is being developed under a non profit organization. Aug 29, 2022 at 14:27
  • 2
    If you are using Qt under the terms of the LGPL (or GPL if you are using Qt's GPL-licensed modules), it is entirely irrelevant that your software is for a non-profit because the LGPL and GPL make no mention of non-profits. In other words, if you are using Qt under the LGPL/GPL, it makes no difference whether you are a for-profit or non-profit entity.
    – Flux
    Aug 29, 2022 at 14:29
  • You can use Qt under the terms of the LGPL (or GPL only if you are using some GPL-only modules). Perhaps you should clarify why you think you will need to purchase a commercial license, so that we could give you more direct answers.
    – Flux
    Aug 29, 2022 at 14:35
  • 1
    @raging-loon now Flux has clarified that it makes no difference that you're a non-profit, could I ask that you read the linked question again and let us know if it does, in fact, tell you everything you need to know?
    – MadHatter
    Aug 29, 2022 at 15:19


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