Dystopia Tracker collects the “predictions”* of science fictional dystopias and examines the ways in which they’ve come true. You can add your own, or suggest ways in which they’ve come to pass.
*Science fiction doesn’t really predict anything except the present. Even sf writers who think they’re predicting the future are (like all of us) so mired in the technological fears and hopes of the day that their work ends up telling you more about that than any future.