The Arithmetic-Geometric Mean
For my fourth-year masters project, I chose to write a paper on the arithmetic-geometric mean (AGM). More information can be found on the AGM at its Wikipedia page. The final paper can be read here. Part of the project involves writing a Python script to calculate the AGM, and to approximate π using it. The script has been uploaded here.
Fair Cake Division
For a third-year group project, three friends and I wrote a paper on fair division (see here for more info). The paper is available here and the script (and its source) can be seen in action here. (This server doesn't run PHP so it's provided by a reverse proxy on a somewhat unreliable server.)
Since this website has been created in Python (with Flask), I have uploaded the source to bitbucket — here.