Hey everyone!
I just wanted to share my simple web application written in Go and HTML+JS to classify images into buckets/folders: GitHub - stawiski/simple-image-sorting: Very simple image sorting webapp written in Golang and HTML.
Hope you find it useful 
I tried a couple of available apps in python, all of which used tkinter and couldn’t get them to work easily.
I’m sorting large datasets of images into folders, and the ability to open the app on any device (e.g. iPhone, iPad) and shareability via internet with friends or external people (such as Upwork contractors) was important to me. For example, you can run this on your local machine and share the local port publicly, so someone can sort the images.
Have a good one!