JOrgan

JOrgan is an open-source, cross-platform software package designed to simulate pipe organs. It allows users to play virtual organs using MIDI input devices, such as keyboards and pedalboards, and hear the simulated sound through speakers or headphones.

JOrgan's primary function is to act as a virtual organ console, routing MIDI input to specific simulated pipes and controls within a virtual organ model. These models, called "Organ Definitions" or "ODF files," describe the layout, stops, and characteristics of a particular pipe organ. The software itself does not generate the audio; it relies on sample sets which are recordings of individual pipes from real organs or synthesized sound. These sample sets are loaded into a compatible audio engine, which then produces the sound based on instructions from JOrgan.

Key features of JOrgan include its support for multiple MIDI devices, customizable control mappings, and the ability to load and use a wide variety of Organ Definitions and sample sets. The software's flexibility allows users to create customized virtual organs tailored to their specific needs and preferences. The open-source nature of JOrgan has fostered a community of users and developers who contribute to the creation of new Organ Definitions, sample sets, and software enhancements.

While JOrgan is primarily used for musical performance and practice, it also finds application in educational settings and for research purposes. It provides a cost-effective way to experience and study different types of pipe organs without the expense or physical limitations of working with real instruments.