Licensing

qt-dev-1111

Can some one help me understand the licensing terms. Is commercial license mandatory for developing a desktop application with ALL of the below requirements:

The application will be distributed to others at a price
The source code of the application will be kept private. It won't be given to the buyers, or the community

Or is LGPL is ok for this. Also where can I find a list of Qt libraries that I cannot include (link) in an LGPL license based application.

If a commercial license is required, if a single developer is going to develop the app for multiple desktop platforms like Windows, and Linux, will two separate licenses be required. Or only one will suffice?

VRonin

@qt-dev-1111 said in Licensing:

Or is LGPL is ok for this

It's ok if you also:

do not change Qt itself without sharing the changes back to the community
do not link to the static libraries

Also where can I find a list of Qt libraries that I cannot include (link) in an LGPL license based application.

here in the section "Add-ons available under GPLv3 license"

If a commercial license is required, if a single developer is going to develop the app for multiple desktop platforms like Windows, and Linux, will two separate licenses be required. Or only one will suffice?

from https://www.qt.io/faq/#_Toc_2_5

You can install Qt and our development tools to as many computers as needed as long everyone using Qt has a valid commercial license.