Platform is a drag-and-drop framework for WordPress. You can customize your site by dragging and dropping sections of content around your site, then select each of your 5 layout options on a page-by-page basis.
There is a free version and a premium version which is bbPress and BuddyPress Integrated.
Requirements: WordPress 3.0 and up, PHP Version 5 and up
Theme homepage: http://www.pagelines.com/themes/platformpro