Ribbon Designer for Microsoft SharePoint and Office 365
We used Ribbon Designer to enhance our SharePoint products, and we've been impressed by the ease of use and great support.
Dirk Loehn, CEO, Locatech IT Solutions GmbH
Forget Ribbon XML

No need to learn the Server Ribbon XML, you concentrate on the applied code and bring your SharePoint solutions to the market faster.
Visual Designers

You can add your custom ribbon tabs and controls to SharePoint 2010 and SharePoint Online pages, lists, document libraries and forms.
Reviews
With installing the Ribbon Designer for SharePoint and Office 365 you get a Visual Studio project and item template to extend and boost your SharePoint solutions. In the past months I spent several hours playing with this tool and found its features can help the everyday life of a SharePoint designer / developer. If you consider to do significant amount of SharePoint ribbon customization, or you are a newcomer on this field of development, and would like to do the job quickly without understanding first all the bells and whistles of the ribbon customization features, you should definitely consider this tool as an option.
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About Add-in Express
Add-in Express Ltd. has a history of leadership in the Microsoft Office integration industry being the pioneer of tools and solutions based on Microsoft Office. It has been working on the development tools and components market since 1998. Its components and tools are distributed and used worldwide by tens of thousands of developers including the most Fortune 500 companies who integrate and embed their applied code into all applications from the Microsoft Office Suite. It works on three platforms (Microsoft .NET, Microsoft VSTO 2005, and Borland VCL) supports all available MS Office applications, versions and suites, and targets its products to help developers save time and money with elegant commercial class solutions.