Buddypress

[NOTE: except for security issues, BuddyPress Default is no longer being actively maintained by the BuddyPress team.] Clean and stylish, BuddyPress Default lets you build a social network straight out of the box. Make it yours with a custom menu, header image, and background. Along with five widgetized areas (one in the sidebar, four in the footer), BP-Default supports featured images (as custom header images on posts and pages) and is furnished with an optional one-column page template that removes the sidebar, and a stylesheet for the admin Visual Editor.