IIOP.NET allows a seamless interoperation between .NET, CORBA and J2EE distributed objects. This is done by incorporating CORBA/IIOP support into .NET, leveraging the remoting framework.
Remoting.Corba is a .NET library that provides IIOP support for the .NET Remoting system. This allows developers to write applications in C# and Visual Basic .NET that interoperate with CORBA systems, without need for an ORB or a SOAP/CORBA bridge.