S3O is a free virtual organ instrument plug-in for Windows PC.
Another member of the RMP2 pack makes its way onto the free synths page. In this case it is S3O, an organ plugin designed to offer something different from the normal hammond emulators.
S3O is designed to create Church Organs, Power Organs and Electronic Organs, in fact any type of Organ that you can imagine.
S3O is available to download as a freeware VST instrument plug-in for Windows.