From Manufacturer's Site: Reunion is the perfect tool to record and organize your family history. Plenty of room for names, dates, places, stories, notes, tidbits, and sources. Fun and educational for the whole family. Reunion 8 shipped on a single CD that included Reunion for OS X and Reunion for OS 8.5 to 9.2. That's right, two different applications, virtually identical in functionality, but optimized and designed for their native OS. Reunion 8 was a "Carbon-based" application.