Which GUI library to choose? QT, GTK or something else?

Question

Mobile development

A whole cycle of small desktop utilities with a GUI is being conceived. I would like to enable their cross-platform use, so they will be written in Python.

Which GUI library to choose? QT, GTK, something else?

1. First of all, we are interested in license purity (free product), and the absence of problems in development and maintenance
.
3.UTF-8

Thanks!

UPD. Thank you very much for your advice! Most likely, I will stop the choice on wxWidgets. What we liked:
- license
- perspective
- documentation
- other, incl. the declared scale of cross-platform

Answer 1

For some reason, I constantly stumble upon working cross-platform programs written with wxWidgets.
What I saw on GTK is buggy on Windows regularly.

Answer 2

GTK and TkInter are fine. True, with a native type of complexity, plus Xs in makosi will be needed.

Answer 3

wxWidgets you can also look at. Successfully applied in Aegisub , for example.

Answer 4

If you look at Qt, then I would recommend PySide. They have a better license. I would choose Qt because for Python it is the most complete framework, it has a lot of documentation, examples, and, moreover, it looks pretty native in different operating systems. Although there are some interesting solutions there too :)
And about

no demons like "component browser", etc.

In PyQt/PySide, you can only include those libraries that are used in your project.

Answer 5

Just stick DHTML (for example, on the Chromium engine) :)
Or mono-project.com/Gui_Toolkits

Answer 6

This answer, apparently, will not work for you, but - SWT .