Liquida Mega Menu is a WordPress plugin, based on Bootstrap 3.3, designed for both regular users and developers. The LMM Plugin has a simple and intuitive interface, integrated in the WP dashboard, allowing you to create and customize an unlimited amount of mega menus, without any programming skills.
Demo: http://codecanyon.net/item/lmm-wordpress-responsive-mega-menu-based-on-bootstrap/11530333