geoDiary v1.0 by Kent L. Smotherman for the GEOS operating system on the Commodore 64 - This is really quite a neat diary program.  First off, it has password protection and encryption.  Second, it has a simple but practical user interface, and last but not least, it  has a nice font.  Plus, you probably won't have to worry about anyone accidentally stumbling across you private thoughts if you keep them in here.

This program was found on issue 10 of "Disk O' Quarter" put out by the Commodore Users of Wichita.