Seize the Day is a virtual calendar, personal organizer, and diary program originally released in 1994.
What makes this program special are the daily quotes and real-time virtual "Living Worlds" (in the "Gallery" window in the screenshot below). These virtual landscapes are synced up to real time and are continually moving and changing. They also make use of color cycling technology to produce mesmerizing animations.
More information and free download, as well as how to run it.
http://www.effectgames.com/demos/worlds/ and http://www.effectgames.com/demos/canvascycle/
Living Worlds in HTML5
More information + downloads can be found at: http://iangilman.com/software/seizetheday.php
Artwork by Mark Ferrari.
I have run Seize the Day on VirtualBox on a Mac OS X host, as well as on DOSBox on Windows 7, both times using Windows 3.1 as my guest operating system. I have also got it running on VirtualBox using Windows 2000, and the color cycling was smoother, but it was too fast and it looked off.
I do not take credit for any of this. The purpose of this page is to provide information on the program.