For separate things. There are some things I don’t want synced to my VPS, partly because of disk space. So Music and photos sync between my phone and workstation, business assets between my workstation and laptop with Syncthing. But with no central server it gets inconvenient if you turn one device off before turning another on - no sync can occur. And Android will shut down Syncthing on my phone and not allow it to run all the time, so that becomes essentially a manual sync. And that’s with running Syncthing on my VPS as an introducer. Still really useful but it works better with a central server or always on devices.

I’m thinking about replacing my current use of Unison (the Rsync front end) for syncing media files between my workstation and home server…but the automated nature of Syncthing means I won’t become aware of file corruption they way I would with Unison, so I’m not sure that’s a good idea.

Seafile is much more like Dropbox, with desktop apps and a web site you can log into, browse files etc, but everything syncs to the server as well as any synced devices. And lots of other functionality: cloud drive, private links to share documents with other people (who don’t have an account - handy for sharing folders of photos with family, work data etc) and bunch of stuff like a wiki and collaborative editing that I don’t use.