The Joomla! Updater is an extension for Joomla! 1.5 that puts a simple "Add Software" menu item under Components. Now you can install the most powerful Joomla! 1.5 extensions in just a few clicks.
JEvents is the Events Calendar component originally written for Mambo ported to Joomla. It features the ability to add new events and publish them on your website in a calendar format.