Firefox Sync - Bring your Firefox bookmarks, tabs, or passwords wherever you go with Firefox Sync. Share between computers and mobile devices. Get Firefox now!
Linkman - Linkman Pro allows for managing large amount of URLs in its own database.
ProjectMarks - Store your bookmarks in the cloud. Access them in any browser or computer.
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Skloog - Visual bookmarking made easy. Save shortcuts and bookmarks in a visual and easy to access format; tagged, organized and arranged for you and Discover new bookmarks and links that you never knew existed.