International Decision Systems was created in 1980.
International Railway Systems was created in 2001.
Open Systems International was created in 1992.
R Systems International was created in 1993.
Lenel Systems International was created in 1991.
International Council on Systems Engineering was created in 1990.
International Society for the Systems Sciences was created in 1954.
International Journal of General Systems was created in 1974.
International Foundation for Electoral Systems was created in 1987.
International Federation for Systems Research was created in 1981.
International Institute for General Systems Studies was created in 1994.
Association for Unmanned Vehicle Systems International was created in 1972.
International Journal of Cooperative Information Systems was created in 1992.