About licensing...

[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!

[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_1980]

just to add to @JKSH,

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

Regards

[U7Development]

thanks both for that info..

[JonB]

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

[macfanpl]

@JonB These reasons being?

[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.

:)