Sync your browser bookmarks with Nextcloud (WebExtension: Chrome/Firefox/Opera)
Con Set up and maintenance is not accessible to casual computer users
This option entails a lot of highly technical work to set up and maintain. You almost need to be a programmer or web developer to be able to roll with this option. Building the software from source, hosting the web app on the local network or on the cloud etc. Updating. It's beyond the abilities of most casual computer users.