Organs, whose tone generation systems are based on Personal Computers rather than dedicated tone generators, are often referred to as “Virtual Organs”. Their suppliers typically are very small companies or even hobbyists. They purchase consoles from one source, keyboards, amplifiers, power supplies, etc. from varied other sources.
Virtual Organ suppliers include, or have included, Martin, VPO, Phoenix Organs among others, some of which are no longer in business. The photographs below were taken from a Martin Organ with PC tone generation technology.