Anyone tried or other GUI-based labelling systems?

Does anyone have experience with appears to allow you to both tag images or annotate images with bounding boxes. One very interesting feature is the ability to run a custom or pre-trained model on your machine against images you tag through their GUI.

I’m curious if anyone has played with this or knows of a similar solution that they like better. I haven’t taken a long look at LabelBox but it might do something similar.

If you have experiences with any GUI based labeling systems or services I’d love to hear about them. If you have another labeling workflow that you love please share.