Comment I have to call BS on the DropBox debate (Score 1) 424
These companies that use Linux as a base for their offering and then can't support Linux are just lazy.
There may have been a time when they could have used the "it's too hard to support all these distros" argument, but that was the 1990's maybe up through 2004.
It is 2018! We now have FlatPak, AppImage and Snaps. Hell, even Microsoft has released Skype as a snap image making it easy for the noob to install it on a fresh (gnu/)Linux desktop.
My best guess is it's the managers either being clueless or having some agenda that keeps them from supporting *nix desktops.
Vote with your wallets people. I haven't used DropBox in many years. Even then, I was evaluating it in parallel with SpiderOak.
For backup I use rsync.net. For sync and collaboration I generally use G-Drive since that's what my clients seem to be using.