Pro Blog Stats provides a single location to monitor the performance and statistics for your blog.
WP Github Gist provides the ability to embed gist and files from Github in your blog posts or pages.
Plugin Dependencies provides static dependency management for plugins.
Slick Social Share Buttons allows you to add Facebook, Twitter, Google +1, Digg, Google Buzz, Linkedin, and Stumbledupon social media buttons in a floating or slide out tab.
Simple Facebook Connect is a framework and series of sub-systems that let you add any sort of Facebook functionality you like to a WordPress blog.
Tallyopia Analytics provides analytics that you can embed into your site using shortcodes or view in your admin dashboard.
W3 Total Cache allows you to improve site performance and user experience via caching.
WPtouch automatically transforms your WordPress blog into an iPhone application-style theme, complete with ajax loading articles and effects, when viewed from an iPhone, iPod touch, Android, Opera Mini, Palm Pre, Samsung touch and BlackBerry Storm/Torch mobile devices.