GigCalendar is a great component for multiple bands and multiple venues which displays gigs as full calendar (month view), tabled list (upcoming and archive), and RSS feeds (full calendar or by individual band and venue) - modules display gigs in a miniCalendar and text list (choose x number of upcoming gigs to display ...
Joomap is a sitemap component for Joomla that shows the Menu Structure, Content Categories, Sections and Virtuemart Categories in a hierarchical list. The sitemap component will add an automated sitemap to your CMS.
Joomlaboard is a fully integrated component forum solution for joomla. It can be installed just like any other component with only a few clicks. The administration backend is fully integrated, native ACL implemented, and it has all the capabilities.
joomlaXplorer is a File- and FTP - Manager. It allows you to edit files, delete, copy, rename, archive and unpack files/directories directly on your server. You can - Browse Directories & Files - Edit, Copy, Move and Delete files - Search, Upload and Downloading files - Create new files and directories - Change file permissions (chmod) and much more
The Joomsef component rewrites Joomla! URLs to be Search Engine Friendly. It is continuation of the component previously named 404SEFx (or 404SEF for Mambo). It supports all Joomla build-in modules and also JoomFish extension. It also offers API for adding SEF functionality for other 3rd party Joomla! modules easily