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Qt 6.11 is out! See what's new in the release blog

About licensing...

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  • U Offline
    U Offline
    U7Development
    wrote on last edited by
    #1

    Hello!

    I'm working on a program for a hospital network, i'm using Opensource license, but i want to sell or rent my program to they and prefer to make my code private way.

    Who i need to pay to for a commercial license?, when, how much and how many times ?

    Thanks!

    JKSHJ 1 Reply Last reply
    0
    • U U7Development

      Hello!

      I'm working on a program for a hospital network, i'm using Opensource license, but i want to sell or rent my program to they and prefer to make my code private way.

      Who i need to pay to for a commercial license?, when, how much and how many times ?

      Thanks!

      JKSHJ Offline
      JKSHJ Offline
      JKSH
      Moderators
      wrote on last edited by JKSH
      #2

      @U7Development said in About licensing...:

      i'm using Opensource license, but i want to sell or rent my program to they and prefer to make my code private way.

      You might be able to use the open-source version of Qt while keeping your code private.

      To start, see:

      • https://resources.qt.io/videos/complying-with-the-requirements-of-the-gpl-lgpl-v3-license-on-demand-webinar
      • https://www.slideshare.net/BurkhardStubert/using-qt-under-lgplv3
      • Section 3.7 at https://www.qt.io/faq/
      • https://softwareengineering.stackexchange.com/questions/47323/can-i-use-an-lgpl-licenced-library-in-my-commercial-app

      Who i need to pay to for a commercial license?, when, how much and how many times ?

      If you want to purchase a commercial license, see https://www.qt.io/buy-product/

      Or, you could contact the sales team at the Qt Company: https://www.qt.io/contact-us/sales-contact-request/

      Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

      aha_1980A JonBJ 2 Replies Last reply
      6
      • JKSHJ JKSH

        @U7Development said in About licensing...:

        i'm using Opensource license, but i want to sell or rent my program to they and prefer to make my code private way.

        You might be able to use the open-source version of Qt while keeping your code private.

        To start, see:

        • https://resources.qt.io/videos/complying-with-the-requirements-of-the-gpl-lgpl-v3-license-on-demand-webinar
        • https://www.slideshare.net/BurkhardStubert/using-qt-under-lgplv3
        • Section 3.7 at https://www.qt.io/faq/
        • https://softwareengineering.stackexchange.com/questions/47323/can-i-use-an-lgpl-licenced-library-in-my-commercial-app

        Who i need to pay to for a commercial license?, when, how much and how many times ?

        If you want to purchase a commercial license, see https://www.qt.io/buy-product/

        Or, you could contact the sales team at the Qt Company: https://www.qt.io/contact-us/sales-contact-request/

        aha_1980A Offline
        aha_1980A Offline
        aha_1980
        Lifetime Qt Champion
        wrote on last edited by
        #3

        just to add to @JKSH,

        note that some Qt modules are GPL, not LGPL. You should avoid them in closed software.

        Regards

        Qt has to stay free or it will die.

        1 Reply Last reply
        5
        • U Offline
          U Offline
          U7Development
          wrote on last edited by
          #4

          thanks both for that info..

          1 Reply Last reply
          1
          • JKSHJ JKSH

            @U7Development said in About licensing...:

            i'm using Opensource license, but i want to sell or rent my program to they and prefer to make my code private way.

            You might be able to use the open-source version of Qt while keeping your code private.

            To start, see:

            • https://resources.qt.io/videos/complying-with-the-requirements-of-the-gpl-lgpl-v3-license-on-demand-webinar
            • https://www.slideshare.net/BurkhardStubert/using-qt-under-lgplv3
            • Section 3.7 at https://www.qt.io/faq/
            • https://softwareengineering.stackexchange.com/questions/47323/can-i-use-an-lgpl-licenced-library-in-my-commercial-app

            Who i need to pay to for a commercial license?, when, how much and how many times ?

            If you want to purchase a commercial license, see https://www.qt.io/buy-product/

            Or, you could contact the sales team at the Qt Company: https://www.qt.io/contact-us/sales-contact-request/

            JonBJ Offline
            JonBJ Offline
            JonB
            wrote on last edited by JonB
            #5

            @JKSH
            Your post could do with being stickied somewhere, though I realise it won't be for various reasons.

            M 1 Reply Last reply
            0
            • JonBJ JonB

              @JKSH
              Your post could do with being stickied somewhere, though I realise it won't be for various reasons.

              M Offline
              M Offline
              macfanpl
              wrote on last edited by
              #6

              @JonB These reasons being?

              JonBJ 1 Reply Last reply
              0
              • M macfanpl

                @JonB These reasons being?

                JonBJ Offline
                JonBJ Offline
                JonB
                wrote on last edited by JonB
                #7

                @macfanpl
                I thought it could do with being stickied because this sort of question get asks frequently (understandably, and it's tricky), and I thought @JKSH provided some good references and was well laid out. WE could do with an avilable post like this.

                I thought it probably won't be stickied because any combination of:

                • Nobody will see my comment.
                • Nobody will choose to act on it, or will not think it worthy of inclusion in the few stickies this forum has.
                • The post aids people (legitimately) in not needing to purchase a license while keeping their code private, which I think is one of the selling points of The Qt Company. I don't really understand the relationship between this forum, the individuals who post here and The Qt Company, but it might not be welcome to advertise this under their auspices, I don't know.

                :)

                1 Reply Last reply
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