Create Stunning OpenCV Apps: 5 Best Python GUI Frameworks

Quart is a good async flask replacement if you need to do a lot of concurrent tasks or have integrated access to WebSockets.

Pygame can be used to control a robot with a video game controller

If you want to use pygame, don't forget to use “pygame-ce” (community edition) rather than “pygame” (there was a mix-up in the git repo, pygame-ce is much better maintained).

I really liked streamlit but I recently switched to gradio even though it took me a while to fully understand how it works. I think it's pretty good if you want “advanced” streamlit for ML.

I thought pyside was free