1. ORBit is a high-performance CORBA (Common Object Request Broker Architecture) ORB (object request broker). It allows programs to send requests and receive replies from other programs, regardless of the locations of the two programs. CORBA is an architecture that enables communication between program objects, regardless of the programming language they are written in or the operating system they run on. From Redhat 8.0 RPM

2. A CORBA ORB (used with Gnome) ORBit is a lightweight CORBA ORB designed for use with the Gnome project. (Nothing about it requires Gnome, though.) This package contains command-line utilities for various ORBit services: orbit-ird, name-client, orbit-name-server, orbit-event-server, ior-decode. From Debian 3.0r0 APT