These are non-AI programs.
I make no claims regarding their ultimate originality (in contrast to the AI programs featured on this website), although they have been written for a specific purpose and therefore have been implemented in a way that may not have been done already.
CauseF program v. 4.5
An interactive demonstration of cause-and-effect relationships, using a grid, spheres, and 'planets'.
Compound interest calculator
Uses five variants of compound interest calculations.
TxtChangerTxtChanger v. 2.0
Delete and insert text in text files, allows batch processing, disregards file extensions.