ORBit is a high-performance CORBA ORB (object request broker). It lets programs send requests to and receive replies from other programs, regardless of the locations of the two programs. ORBit features C bindings and high performance.
The ORBit home page has many useful links and pointers. The Object Management Group's "CORBA for Beginners" page has some introductory material.
Developers intending to use this distribution for application development should be sure to read the information in FAQ 3.8.