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.
Ancestral Quest was created in 1994.
The Quest of the Absolute was created in 1834.
The Quest for Thelda was created in 1989.
Progress Quest was created in 2002.
Quest Visual was created in 2009.
Acorna's Quest was created in 1998.
Quest University was created in 2002.
The Quest of Ki was created in 1988.
Shapeshifter's Quest was created in 2005.
The Quest - novel - was created in 2007.