After Dark was a series of computer screensaver software introduced in 1989 by Berkeley Systems for the Apple Macintosh, and for Microsoft Windows in 1991.

Following the original, new editions were introduced including More After Dark and Before Dark, as well as editions themed around licensed properties such as Star Trek, The Simpsons, Looney Tunes and Walt Disney Company characters.[2] The screensaver modules were often noted for their intertextuality, such as the flying toasters appearing in the Fish screensaver, and the cat from Boris screensaver appearing in the Bad Dog screensaver.

As well as the included animated screensavers, it allowed the development and use of third-party modules, of which many hundreds were created by the height of After Dark's popularity