A capable self-hosted and FOSS replacement for Dropbox, Google Drive, etc.
- Syncthing is free and open source software. It's been around for a while and has reached a relatively mature state. This means the UI does not arbitrarily change for a constantly expanding set of features (this was a very annoying behavior of paid providers).
- Syncthing synchronizes files peer-to-peer amongst your devices; it does not need a centralized node to coordinate the service. However, it does benefit from having an always-on node that all devices can sync with if others are offline.
- The only storage limit is the amount of disk space on your devices.
- All data is transferred over an encrypted connection- no need to worry about trusting a third party.
- It is possible to set up untrusted nodes that only store an encrypted copies of your files. This means you can use a relatively untrusted cloud provider as an always-on node and still be sure that your files cannot be accessed.2
This all sounds great, however the one major downside to Syncthing is its lack of mobile application. This kept me from using it for quite a while until I finally found a workaround (at least for iOS). Enter Secure Shellfish3. While it looks like a run-of-the-mill SSH client for iOS, it has a nifty feature of allowing you to mount a remote device onto iOS's Files app. If you have an always-on server running Syncthing you can use this as your mount device to get mobile access to your files. iOS' Files app has all of the normal filesystem features you'd expect: uploading, downloading, scanning documents in, etc. The experiences ends up being pretty seamless.
I don't have a similar recommendation for Android users just yet, but I'm sure something similar exists. If you're reading this and end up giving it a shot, send me an email and let me know what has worked for you so I can post it up here.
While the redundancy of having my filesystem in sync on multiple devices is pretty safe for ensuring no data gets lost, I also fall back to BorgBackup to ensure I have an entirely separate off-site backup. You can read more about this setup here (ctrl+f for the borg section).
- The one I stuck with the longest and recommend if you're unwilling to go down the Syncthing path is Tresorit. Note that I selected this service quite a while ago and there may be companies offering a more secure solution these days. My biggest gripe with them was that their client software was all closed source.↩
- I have not tested this personally and cannot fully vouch for it being 100% safe/leak free.↩
- The app is paid but I have no affiliation with the developer.↩