Firefox Sync - Bring your Firefox bookmarks, tabs, or passwords wherever you go with Firefox Sync. Share between computers and mobile devices. Get Firefox now!
URL Manager Pro - URL Manager Pro for Mac OS, the most powerful bookmark manager for the Mac for use with Safari, Firefox and Chrome
start.me - A Modern-day bookmark manager. A place for your favorites. A news feed (RSS) reader. A browser startpage. A portal for your team.
ProjectMarks - Store your bookmarks in the cloud. Access them in any browser or computer.
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.
Diigo - Diigo is a powerful research tool and a knowledge-sharing community