The FX Networks are a group of TV networks. The channels are FX, FXX, and FXM. There is also a streaming service called FXNow.
FX is the flagship network. It airs comedies, dramas and movies for adults. Shows on FX include American Horror Story, Atlanta, Better Things, The Strain, Baskets, and Sons of Anarchy. Movies aired on the channel include The Croods, Avatar, The Avengers, Battleship, and Despicable Me 2.
FXX was created to replace Fox Soccer. It airs comedies, dramas, and movies. Shows on FXX include You're the Worst, It's Always Sunny in Philadelphia, The League, Anger Management, and The Simpsons. Movies featured on the channel include Paranormal Activity: 4, Grown Ups 2, Monte Carlo, The Simpsons Movie, and Pirates of the Caribbean: The Curse of the Black Pearl.
FXM is short for the FX Movie Channel. As its name suggests, it airs movies. Movies on FXM include Killing Kennedy, Killing Lincoln, Killing Reagan, The Amazing Spider-Man 2, and Marmaduke.
The logos for the channels regularly appear as black, but in on screen appearances, they appear clear.
FXX is known for airing the longest continuing marathon in the history of television, which featured every episode of The Simpsons that was aired at the time. The marathon also included The Simpsons Movie.
en.wikipedia.org/wiki/FX (TV channel)
en.wikipedia.org/FX Movie Channel