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    Unsolved About licensing...

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    • U
      U7Development last edited by

      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!

      JKSH 1 Reply Last reply Reply Quote 0
      • JKSH
        JKSH Moderators @U7Development last edited by 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/

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

        aha_1980 JonB 2 Replies Last reply Reply Quote 6
        • aha_1980
          aha_1980 Lifetime Qt Champion @JKSH last edited by

          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 Reply Quote 5
          • U
            U7Development last edited by

            thanks both for that info..

            1 Reply Last reply Reply Quote 1
            • JonB
              JonB @JKSH last edited by JonB

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

              M 1 Reply Last reply Reply Quote 0
              • M
                macfanpl @JonB last edited by

                @JonB These reasons being?

                JonB 1 Reply Last reply Reply Quote 0
                • JonB
                  JonB @macfanpl last edited by JonB

                  @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 Reply Quote 0
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