All-in-one platform for developing any types of Office extensibility projects, including COM add-ins, smart tags, RTD servers and user-defined functions for Microsoft Office 2010 - 2000. Create application-specific plugins and shared extensions that work on all end-user applications: Outlook, Excel, Word, PowerPoint, Visio, Project, MapPoint, Publisher, etc. in C#, VB.NET, C++ and Delphi Prism. More info: homepage