nogoop ActiveXCOM Inspector Description:

The ActiveX/COM Inspector allows you to inspect and execute any ActiveX control. It works with controls and typelibs automatically showing the documentation associated with classes and members. Quickly find out how a control behaves using event logging, a visual design surface, method execution and property inspection. Use it to help understand Automation interfaces (for example MS Office), and to help with developing Addins.

Features include showing COM running objects, dynamic creation of ActiveX objects, automatic links to documentation for the classes, visual design surface, type lib browsing, event tracing, class casting, and automatic migration of COM typelibs to .NET assemblies,