CustomTkinter VS traitsui

I like CustomTkinter. A UI library based on Tkinter, so you can also use Tkinter along with it.

All tkinter widgets with exceptio of Canvas are currently supported and ttk themed widgets used whenever possible. I plan to add support CustomTkinter eventually.

both custom tkinter and pyqt5 have somewhat "modern" looks.

If you go for tkinter, I recommend you use CustomTkinter instead. It looks much nicer with no extra effort

New GUI based on the splendid work of customtkinter: it is now possible to select files via a "Select files" button instead of the Drag&Drop function that presented several problems this new library allows for much more organized and optimized code the new interface is fully resizable and so adaptable to any screen the new interface also allows more space to add new widgets (in the future) to customize the upscale operations

Well, as I mentioned, customtkinter makes that fairly easy.

In last project I was used customTkinter.

https://ttkbootstrap.readthedocs.io/en/latest/ https://github.com/TomSchimansky/CustomTkinter

I'm using TraitsUI for every standalone GUI app right now. It's a wrapper around PySide, PyQt and WX, mostly autogenerating the GUI using view definitions. https://docs.enthought.com/traitsui/

If anyone could be interested in the same material, I found something potentially interesting at the git repo of TraitsUI.

It's not quite a new implementation, since the initial version of enaml was implemented almost a decade ago, and was partly inspired by an earlier toolkit called Traits/TraitsUI - https://github.com/enthought/traitsui.