Adbrite Widgets shows ads from adbrite.com as widgets.
GoodReads allows a user to display the RSS feed of one of their Goodreads shelves on their WordPress weblog.
WP Tags to Technorati turns your WordPress tags into Technorati tags.
WP User Manager aims at improving the WordPress User Management so that WordPress can be used beyond a blog and something like a CMS.
WP User Moderation helps to moderate and approve the WordPress User Account generation.