Tkinter is a standard GUI library for Python, and it is the most popular Python GUI framework. It is fast, easy-to-use, and provides a wide range of widgets, including buttons, labels, and text boxes.

NMKD Stable Diffusion GUI looks like this. Enter a character string in the 'Prompt' item and click 'Generate!' to generate the image. By default, 5 images are generated for one prompt.