IBM RPG was created in 1959.
RPG Group was created in 1979.
RPG Enterprises was created in 1820.
IBM BASIC was created in 1981.
IBM CPC was created in 1949.
IBM AIX was created in 1986.
IBM Award was created in 1984.
IBM JX was created in 1984.
IBM SSEC was created in 1948.
RPG Maker - PlayStation - was created on 1997-11-27.
IBM Lotus Notes was created in 1989.
TwinBee RPG was created on 1998-04-02.
Wolfenstein RPG was created on 2008-09-30.