Hey theon144 - one of the differences seems to be public shares. Diode Drive is able to share files with anyone/everyone even if they don't have Diode Drive installed. (send them a link)

e.g. If you need to send a file to someone and it is >25MB, not easy to do with email - Diode Drive makes it easy without having to upload the file to the cloud.

e.g. https://github.com/syncthing/syncthing/issues/2633