Had a thought, but some quick searching didn't really give me much.

Is there such a thing as a browser that respects privacy, and can be synched through self hosted means?

I'd be looking for tab sync, bookmark, history, etc.

Librewolf, you can host your own sync server.

I forgot about librewolf. Any downsides to it over Firefox?

• Some sites won't work at all due to the anti-fingerprinting stuff that's enabled on it.
• Everything will be forced to light mode too because of it. Sometimes websites will render at the wrong size.
• DRM content won't play.

I'm using Zen currently, because it at least strips out the telemetry that Firefox has while still being a normal browser.

Zen seems interesting

I like it quite a bit.