1)   Add-in Express 2 .NET Edition 2007.3.4
Visual component set to program deployable, updatable, secure, isolated, version-neutral feature-rich plug-ins for Microsoft Office 2007 - 2000. Develop COM add-ins, smart tags, RTD servers, Excel UDFs in C#, VB.NET, C++, J#, Delphi for .NET.

 2)   Add-in Express 2 VCL Edition 2007.3.4
A true RAD tool for writing COM Add-ins, Smart Tags and RTD servers in Delphi 5, 6, 7, 2005, 2006 and 2007. It implements everything required by supported technologies, you write functional code only. Supports Outlook, Excel, Word, PowerPoint, etc.