Magnolia is a collaborative bookmarking tool with an excellent design and handy groups functionality.

Add a website you like to your list, access your list from any computer, sort, describe, and share it!

Keep links to your favorite articles, blogs, music, restaurant reviews, and more on del.icio.us and access them from any computer on the web. Share favorites with friends, family, and colleagues. Discover new things. Everything on del.icio.us is someone\'s favorite - they\'ve already done the work of finding it. Explore and enjoy.

Furl is a free service that saves the important items you find on the Web and enables you to quickly find them again. Furl archives a personal copy of every page you save. When you want to recall it, you can find it instantly by searching the full text your archived items. Each member has a personal archive of 5 gigabytes (GB), large enough to store tens of thousands of searchable items.

Spurl.net is a free on-line bookmarking service and search engine. It allows you to store and quickly access again all the interesting pages you find on the web from any Internet connected computer.

Social Bookmarking, Tagging, Blogging and Notes.

Reddit.com is a source for what\'s new and popular online. reddit learns what you like as you vote on existing links or submit your own!

BlogMarks is a collaborative link management project based on sharing and key-word tagging. Build on a blog basis, BlogMarks is an open and free technology. Now, you can access your favorite URL\'s from any computer. And with BlogMarks, you share your favourite with other users.

Jots is a collaborative bookmarking system that allows you to Store, Share and Discover relevant links. Store your own links and choose whether to share them with the world, with a select group of people or just for yourself to use. Discover new links based on specific users or topics of interest.

Store all your favourite links in one place, accessible from anywhere. Share your bookmarks with everyone, with friends on your watchlist or just keep them private. Tag your bookmarks with as many labels as you want, instead of wrestling with folders. Also, Scuttle is based on an open-source project licensed under the GNU General Public License. This means you can host it on your own web server for free, whether it is on the Internet, a private network or just your own computer.

Social Bookmarking using Tags and Ajax technology where users can restyle their interface using CSS, submit their theme or just choose from the ones available.

Here's a new social bookmarking site: http://www.bookmarkyoo.com/

Also, www.bluedot.us

www.taggly.com/ Nice design, bookmarklet can be added to the google toolbar