.NET Command Bars by Nevron

Nevron User Interface provides you with distinguishable and stylish menus and toolbars, which are created entirely from scratch. All commands share a common object model, which makes it easy for a command to be visualized by any parent. The rich design-time support enables you to easily create modern MS Office 2003-like menus and toolbars with dock/undock capabilities.
This screenshot demonstrates a command bars framework with all the toolbars docked to the parent container.

Toolbars in this screenshot are the same as in the previous one, but are all floating.