r/xbox
ConsolesVisitXbox news and discussion.
Subreddits starting with X
The full directory, one letter at a time.
r/xbox360
Retro gamingVisitThe Xbox 360: games and memories.
r/Xcom
Game communitiesVisitThe XCOM series: strategy and discussion.
r/xfce
Open sourceVisitThe Xfce desktop environment.
r/XFiles
TV showsVisitDiscussion of the TV series The X-Files.
r/xkcd
WebcomicsVisitFans of the webcomic xkcd.
r/xmen
ComicsVisitX-Men comics and films.
r/xmonad
Open sourceVisitThe xmonad window manager.
r/xxfitness
WorkoutsVisitFitness for women: training, nutrition, and support.
r/xxketo
DietsVisitThe keto diet for women.