It's not about COM. COM is: "Unlike C++, COM provides a stable ABI that does not change between compiler releases. This makes COM interfaces attractive for obj

It's not about COM. COM is: "Unlike C++, COM provides a stable ABI that does not change between compiler releases. This makes COM interfaces attractive for object-oriented C++ libraries that are to be used by clients compiled using different compiler versions." http://en.wikipedia.org/wiki/Component_Object_Model http://en.wikipedia.org/wiki/Component_Object_Model Others are talking about the compound document format OLE. And about DCOM (Distributed Component Object Model). Both OLE 1+2 and DCOM are not that great implementation wise, in retrospect. COM on the otherside is fine. D-Bus is like DCOM, and has similar/other deficits, as do the competition: CORBA, RMI, XML-RPC, SOAP. MDI and compound document format were an oversold concept, that failed. Today we have HTML5 with iframes.