Firefox Sync is a feature built-in to the Firefox browser that allows syncing preferences and user data between all your devices. This includes bookmarks, passwords, history, and installed add-ons. By default, Firefox uses Mozilla's servers for the Sync feature. However, setting up a self-hosted Firefox Sync server allows you to configure Firefox to use your server instead, which gives you more control, and the sync feature no longer relies on Mozilla's servers. This is helpful to comply with st......