You can find some code I worked on that I hope would be useful to others on BitBucket.
A tool for parsing Filemaker XML data written in Python.
I have a post about Migrating a Filemaker database to Django that describes its use in more detail.
Preston Holmes’ tool for determining filesystem changes made by an installer process on Mac OS X.
It is a beautifully neat approach to the hassle of re-packaging software that is delivered with non-package format installers. My fork is here: http://bitbucket.org/davidbuxton/watchedinstall/