Fliqlo Screensaver - A screensaver that displays the time using a flip clock.
Countdown Screensaver - A Mac screensaver for counting down to a date ๐ฅ๐
Really Slick Screensavers - Really Slick contains free 3D OpenGL screensavers.
Timetaco - Create your own countdowns, as easy as 3, 2, 1
Clock Screen Saver - Clock Screen Saver is a free cool looking screen saver that displays the current time in the way of digital or analog clock faces.
It's Almost - Your simple countdown to anything.