Foxmarks Syncs your bookmarks between computers by Brett Sennett
If you have more than one one computer, keeping your bookmarks up to date on each was always a big pain. Now there's Foxmarks (http://www.foxmarks.com). Foxmarks is a free add-on for your browser that syncs and backs up your bookmarks across multiple computers and more. Once your bookmarks are synced to your account, you can even access them from any computer. This is a handy feature if you have a bookmark that you can never remember the URL. Features include:
Seamlessly Sync changes to your bookmarks and passwords across all your computers.
Automatically Backup your bookmarks after every change.
Always Have Access to your bookmarks on our website.
Best of all it's free. It was originally only for Firefox, but now it can sync Safari too.