I removed Dropbox from my Windows computer as soon as they started to include a minifilter driver with new versions.
https://www.dropbox.com/en/help/9249
I don't believe a program needs to integrate so deeply into the system just to sync the files.
https://www.dropbox.com/en/help/9249
I don't believe a program needs to integrate so deeply into the system just to sync the files.
(It might have been that some programs were doing IO that avoided triggering the change notification, and a sufficiently large {number of customers,customer} complained about it.)
I don't work for Dropbox, and I haven't used the API, but as I said, I really doubt they added a (signed) driver requirement lightly.
[1] - https://msdn.microsoft.com/en-us/library/aa364417%28VS.85%29...