Mahotas - Mahotas is a computer vision and image processing library for Python.
PySimpleGUI - A simple to use GUI that can create custom GUIs
OpenCV - OpenCV is the world's biggest computer vision library
PyQt - Riverbank | Software | PyQt | What is PyQt?
ITK - ITK is an open-source, cross-platform library that provides developers with an extensive suite of software tools for image analysis.
Dear PyGui - Dear PyGui is a simple to use (but powerful) Python GUI framework. Dear PyGui provides a wrapping of Dear ImGui which simulates a traditional retained mode GUI (as opposed to Dear ImGui's immediate mode paradigm).