A management system for temporary static content (such as ads) on your WordPress website. Manage->Ad-minister to administer.
Brian's Threaded Comments
This gives you threaded comments and a "wandering" comment form.
cformsII offers unparalleled flexibility in deploying contact forms across your blog. Features include: comprehensive SPAM protection, Ajax support, Backup & Restore, Multi-Recipients, Role Manager support, Database tracking and many more. Please see ____HISTORY.txt for what's new and current bugfixes.
DISQUS Comment System
The DISQUS comment system replaces your WordPress comment system with your comments hosted and powered by DISQUS. Head over to the Comments admin page to set up your DISQUS Comment System.
Exclude Pages from Navigation
Provides a checkbox on the editing page which you can check to exclude pages from the primary navigation. IMPORTANT NOTE: This will remove the pages from any "consumer" side page listings, which may not be limited to your page navigation listings.
Generates a list of subpages you can display in the page, or anywhere in the theme.
Really Simple CAPTCHA
Really Simple CAPTCHA is a CAPTCHA module intended to be called from other plugins. It is originally created for my Contact Form 7 plugin.
Twitter for Wordpress
Adds an AJAX rating system for your WordPress blog's post/page.
WP Greet Box
Show a different message to your visitor depending on which site they are coming from. For example, you can ask Digg visitors to Digg your post, Google visitors to subscribe to your RSS feed, and more! Best of all, this plugin is compatible with various WordPress cache plugins.