Ribbon is really great, but you cannot just use it for free for Office-competing products: "There’s only one limitation: if you are building a program which dir

Ribbon is really great, but you cannot just use it for free for Office-competing products: "There’s only one limitation: if you are building a program which directly competes with Word, Excel, PowerPoint, Outlook, or Access (the Microsoft applications with the new UI), you can’t obtain the royalty-free license" https://blogs.msdn.microsoft.com/jensenh/2006/11/21/licensing-the-2007-microsoft-office-user-interface/ https://blogs.msdn.microsoft.com/jensenh/2006/11/21/licensin... Except if you probably pay MS a royality fee.