Xmarks formerly Foxmarks, is a browser add-on that syncs and backs up your bookmarks and passwords across multiple computers. Once you install Xmarks on all your computers, Xmarks will automatically synchronize any changes you make ensuring your bookmarks and passwords stay the same everywhere. Xmarks will sync across browsers too. They currently support Firefox, Chrome, Internet Explorer, and Safari (MacOS).
If you are traveling you can view, add, edit and delete your bookmarks from your online account and any changes will automatically be saved to your other computers.