Castle Thorn Software is a small, independent computer game developer located in Hamilton, Montana, USA. Founded in 2004, Castle Thorn is trying to break into the MMORPG space market. To date their only release is StarQuest Online. This game is notable for being the only space-based MMORPG which allows players to work as crewmen on the same vessel, operating different control stations.
Source: Wikipedia, Castle Thorn Software , available under the CC-BY-SA License.