[thelostdragon]

I use [Firefox Sync][1] and it works seamlessly. Not sure if you have tried it.

  [1]: https://www.mozilla.org/en-US/firefox/features/sync/

[lifthrasiir]

Not only that, but syncserver can be locally installed so you have an additional layer of autonomy if you want that. (The data itself is already end-to-end encrypted, so it is not really necessary to be exact.)

[SeriousM]

Here is the repo for reference:

https://github.com/mozilla-services/syncstorage-rs

[bool3max]

One of Firefox's best features, works seamlessly across 5 devices.

[heavyset_go]

Used this for a while and it works well. Sounds like what the OP wants, as well.

[beatthatflight]

came to say this. Simple, effective.