I recall in the past lots of people reporting issues with their bookmarks going missing with xBrowserSync. It also hasn't been updated in quite some time. My biggest issue, is it appeared to primarily integrate with the browsers bookmark manager... and once you had thousands of bookmarks in the browser bookmark manager, it started lagging. I prefer something with a native local service to search and manage bookmarks, like Shiori.. but I don't like Shiori all that much either.

I've been using xBrowserSync for over 2 years to sync 4 devices without issue. I do occasionally export my bookmarks for backup, but haven't had to use it. I switched after losing years of bookmarks to a Firefox sync issue. One of the best things about xBrowserSync (for me) turned out to be its workflow. I can't imagine going back to bookmarking in nested folders. Using tags with search is just so much better.

Thanks. I'll give it another go, although I was hoping for something that synced to markdown files.

I use it as well, the UI is a little cheesy and windows XPish (at least to my eyes). Maybe there is a technical limitation preventing it from inheriting the browser theme.

But so far, it's worked ok.