• Java

Java is a programming language created by Sun Microsystems

• MIDI

MIDI stands for Musical Instrument Digital Interface. Take a look at the 'official' MIDI tutorial.

A list of other virtual organs:

• Organ Tool
• PC Organ Project
• Linux Organ
• Sound Canvas Pipe Organ Project (SCPOP)
• General Purpose Organ (GENPO)
• Classic Organ Software Emulator
• Miditzer
• Aeolus