Mozilla Extend Firefox Grand Prize Award Winners - http://blog.mozilla.com/extendfirefox/ Judged by: Garrett Camp, Brendan Eich, Jesse James Garrett, Joshua Schachter, Gina Trapani, etc
Shareaholic is the easiest way to share & bookmark great content from anywhere on the web from one simple ALL-IN-ONE add-on. Works with Facebook, Twitter, Pinterest, Google, LinkedIn, E-mail and 200+ additional services.
Pencil is a Firefox add-on to do GUI prototyping and simple sketching
Bookmark Previews adds an album view and thumbnail view to the bookmarks manager.
Firefox 3 lets you tag your bookmarks, but it doesn't give you a great way to browse your bookmarks by their tags. TagSifter tries to. Select a group of tags in the sidebar or menu, and TagSifter shows you all the related tags and bookmarks. Or searc...
This add-ons adds a set of icons to the quick bookmarks, allowing you to quickly add tags to your bookmarks by clicking on each icon.
HandyTag simply providing a complete set of most relevant keywords in the bookmark's edition panel. These keywords are retrieved from many different sources.