Hmmm..... Since the name is derived from the username of the creator should it not be: ErgoDoxes? One Dox, many Doxes, Doxii, Doxen, Dooooooöööö..... harumph! In Finnish it's easy, ErgoDoxit or ErgoDoxia depending on context.
Maybe move to Off-Topic? Or perhaps Keyboards since it's about the name of a specific keyboard?