Profiler is a plugin for generating and displaying profiles for the registered users on a WordPress site. It is intended to be a “set it and forget it” plugin. You do not have to have any programming knowledge to use this plugin.
A plugin by Yotify.com, a personal web scouting service enabling users to track anything on the Internet and enlist their friends to help.
DandyID is a free service that enables you to easily connect all of your online identities.
Simple Shortcodes provides an easy to use mechanism for creating and using custom shortcodes.
clikStats is a wordpress plugin that automatically logs the number of clicks within a post.
Tweets your about your posts when they are published.
MagpieRSS is already integrated with WordPress, this plugin will allow you to implement it easily within your theme.
Old Post Promoter random selects an old post for promotion onto the front page and into the RSS feed in either 1st or 2nd position. There are a variety of timing options and a no old post promotion category blacklist.
Blog Copyright injects a copyright notice into the footer of your blog. I maintains the original year while adding a range to the current year. There are a variety of other options.
GD Star Rating is post, page and comment rating plugin for WordPress. Plugin supports different image sets, rating moderation, vote rules, time restricted voting, templates, trend calculations, has a widgets build in and shortcode support.
Plugin to create your own custom widgets
The plugin checks and displays for all your blogroll-bookmarks with a separate saved feed-url, when the most recent update has occurred at the bookmark site.