Honestly, I'm not sure. It seems like they cover slightly different fields, despite having some overlap. AFAIK, Darknet doesn't natively do a bunch of the image

Honestly, I'm not sure. It seems like they cover slightly different fields, despite having some overlap. AFAIK, Darknet doesn't natively do a bunch of the image processing work that Sod can do, like edge detection with Canny, because if you wanted that, you'd just use OpenCV. I'd imagine that based on the licensing, this is probably closer to the open-sourcing (well, sort of, since the commercial applications and GPU training requires a paid license) of an internal tool that the company is using on the backend of their own API-driven machine learning business. So, it covers some things that Darknet isn't really designed to do, since real-time object detection isn't the main area they're really interested in.