ThinkQuest was created in 1996 by Allan H. Weis under his nonprofit Advanced Network and Services. The service was acquired by the Oracle Education Foundation in 2002, which has operated the competition until 2012. As of July 1, 2013 the ThinkQuest service has been discontinued.
In-Quest was created in 1994.
Dallas Quest was created in 1984.
The Eternal Quest was created in 2003.
Grapplers Quest was created in 1997.
Flimbo's Quest was created in 1990.
Crystal Quest was created in 1987.
Cube Quest was created in 1983.
Ancestral Quest was created in 1994.
Quincy's Quest was created in 1979.
Quest Software was created in 1987.
Camp Quest was created in 1996.
Quest Crew was created in 2007.