FLAT is a responsive admin template powered by Twitter Bootstrap 2.3.0 for administration and backend applications. FLAT has a very fast and clean UI and design. It provides a very user-friendly design which results in a great user-experience. FLAT is the admin template you want to use for your next project – your clients will love you for this admin template!
Demo: http://themeforest.net/item/flat-responsive-admin-template/4354008