Software developed by Apple for the Macintosh computer to allow MIDI applications to communicate with each other through virtual MIDI connections inside the computer. Basically it works like a virtual patch bay, allowing the user to manually route MIDI data and sync information between components installed in the system. Due in part to the widespread success and usefulness of OMS and FreeMIDI, development stopped on MIDI Manager in 1995. By today’s standards it is relatively slow and cumbersome to use, but there is still the occasional circumstance that requires it.