I've been using Dropbox with Linux for a long time. It's THE reason for why I'm paying for Dropbox, because none of the other mainstream alternatives are supporting Linux. Which is preposterous given that Linux is the most popular choice for servers, including home servers. But then companies like Google or Microsoft don't give a shit, since for them cloud storage is just a complementary to lure you in to their other stuff and Linux users are not really their target.

So if Dropbox doesn't keep supporting Linux, I'll drop them like they are a hot potato. I do hope they won't make that mistake, because their continued Linux support has been the main sign that they care about me, their customer. And I don't want half-baked support either. I want it to be a first class citizen. Because I'm paying 14 EUR per month for my Dropbox account, amounting to 168 EURs per year, which isn't cheap at all. Yeah, yeah, it's the price of 5 coffees, but if I'd pay that price for everything I use, I'd be broke.

> Electron and nw.js

These would take care just for the UI, which for the purpose of doing file synchronization amounts next to nothing.

Seafile supports Linux and works phenomenally well. I've been using it for a couple years now. Don't trust its encryption (just like you should not trust Dropbox's encryption claims), but from a utilitarian point of view, Seafile is great!

Please, no. That would destroy my battery.

Plus, when it comes to data/file sync tools like Dropboox, we need interoperability with existing tools: File Managers, filesystems etc. Not GUIs. Electron et al. are good for cross-platform GUIs, not CLIs or daemons.

I only mention Electron as an option since they don't attempt to get anything working, also I would mostly use these services on my own desktop, on a laptop I rather download files I need via a website interface directly.