Om is the simplest application you can find.  All Om does is play a forever looping Om sound in the background like you would hear in a monk temple.  There is nothing else to say about Om!  

Clock is probably the most basic screensaver app you can get: it displays a big B&W digital clock ticking every second.  Clock is a very early Macintosh application, being released in June 2nd, 1984.  The only cool thing about it is...

Generate fun and interesting anagrams for names and phrases. Longer phrases may require the user to increase the app's memory.

Diatom is a simple B&W graph plotting program based on Fourier Transform using an algorithm by Brian McGhie which produces nice "flower" type of graphs/shapes.  Output can be printed out on a printer or a HP plotter.  You can...

A whimsical and quirky paint program that's more a creative playground than a tool for getting specific results done. The tools are quite unique and something you won't find from your usual paint program. See this video of the...

A slideshow of beautiful tropical images that each come with a soundscape, either natural sounds or panpipe music. Strongly South American feel, all nature. 100 images with a different soundtrack each, + 25 videos.

A small joke application that pretends to throw an error, then doesn't let you press the restart button. Click resume to exit the application.

That app sings "99 bottles of beer on the wall..." and you can change the speed and pitch of the voice.  You can also define any number instead of 99 that is from 0 to 999,999,999,999,999! 99bottles will happily sing away until it...

From Stupid Mac Tricks in 1987.  A harmless trojan program that was worth a laugh.