The EntireX documentation contains the following COM/DCOM-related topics:
The EntireX DCOM Wrapper generates DCOM-enabled components using RPC
technology. This so-called "wrapping" makes it possible to treat
existing applications as ActiveX components. More info
Broker ActiveX Control allows GUI application developers to use an ActiveX-based
interface to access EntireX Broker. It can be used within ActiveX
containers, such as Visual Basic, PowerBuilder, Delphi, Microsoft Excel,
Microsoft Word. More info
See also EntireX Workbench.