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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?

raging-loon
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    Does this answer your question? License for open source application based on Qt – Flux Aug 29 '22 at 14:25
  • The thing I'm concerned about is that this project is being developed under a non profit organization. – raging-loon Aug 29 '22 at 14:27
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    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 '22 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 '22 at 14:35
  • @Flux Thanks. I'm very happy we can use Qt because it is very powerful. Do you want to add that information as an answer? – raging-loon Aug 29 '22 at 14:36
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    @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 '22 at 15:19
  • See also https://opensource.org/osd rules 5 and 6. An open source license that discriminated against non-profits for some reason, probably wouldn't fulfill this definition. – Brandin Aug 30 '22 at 07:43

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