Next Generation Theme Framework <http://gantry.org>
A free Joomla! component for churchs to share their sermons.
Super UI Kit ( http://mustaqsheikh.github.io/superuikit/ ) is a Joomla Plugin Extension, developed by HerdBoy Web Design and Development to integrate the Super Awesome YOOtheme UI Kit Framework easily into your Website. UIKIT is a lightweight and modular front-end framework for developing fast and powerful web interfaces
JConverter is a Joomla 1.5 component for converting a Wordpress blog to Joomla. It imports posts, pages, categories, users and even links from Wordpress to Joomla.