Firefox Sync - Bring your Firefox bookmarks, tabs, or passwords wherever you go with Firefox Sync. Share between computers and mobile devices. Get Firefox now!
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Linkman - Linkman Pro allows for managing large amount of URLs in its own database.
Bookmarks Backuper - Backups Chrome bookmarks to your Google Drive.
SuperSorter - Clean up your bookmark mess!
Diigo - Diigo is a powerful research tool and a knowledge-sharing community