Note: for Python programs you will need to change the .txt file extension to .py to make it work.
Here is my planet simulator in Proce55ing, which is a Java environment (an applet)
GravityBounce
And here's my random sentence generator in Python
Earlier version
Later version, with cleaned-up punctuation and file-fetching capability
A written description of how it works
And here is my Lissajous pattern explorer in Python, using Tkinter.
The Lissajous Pattern Explorer
Lissagloop, a sort of Lissajous-figure paint-pendulum.
(requires Pygame)
Lissagloop