[bsclifton]

It would take require changes to Chromium (with regards to authentication), but Brave's sync server is open source and protocol-wise mostly compatible (client side encryption is enforced): https://github.com/brave/go-sync

I doubt Chromium authors would accept changes to authentication (even if you put guards around it like `#ifndef GOOGLE_CHROME_BRANDING`). If there were a 100% compatible service available, you can change the service URL using CLI arg `--sync-url`

There is also a local sync backend which is interesting as it writes to disk. You could potentially sync this via OneDrive or something similar. You can enable with the CLI arg `--enable-local-sync-backend`. Directory settable using `--local-sync-backend-dir`

You can watch the data being synced via chrome://sync-internals