Interface made by Phi Dinh (@phi6) for a forthcoming game. Full video. h/t: Polyducks
Juggly GIF-animations of ASCII Art JuggleMaster by Mewbies, 2013. From a video of this terminal program in action, with a much smoother flow.
ASCIIQuarium, a perl-script by Robobunny with graphics mostly by Joan Stark. There are screensaver versions for OSX and Win. GIF made from this video by Mewbies.