All Media Network (formerly All Media Guide (AMG) and AllRovi), is an American company that owns and maintains AllMusic, AllGame, AllMovie, SideReel, and Celebified. The company was founded in 1990 by popular-culture archivist Michael Erlewine.All Music Guide (now AllMusic) was launched in 1991. Later in 1994 the All Movie Guide (now AllMovie) was launched and in 1998 the All Game Guide (now AllGame).