Oh, hang on, there's my experiences building a low noise system (or two).
Then there's my backup script for unix systems. It should work on anything unix like with a tape drive of some form. For changer support your OS needs to use MTX.
The following snippet will do this if you don't have dos2unix:
Finally, there's also a POP3 emulator for use with the likes of HONEYd.
Other random items likely to come and go.