Servo_controller is a project mainly written in Python, it's free.
A set of scripts to control servo's via a Parallax board
This is more of a toy project so the code is a bit hackish in nature. I am targeting an older Parallax board that I've had laying around for a while now. This code basically sends commands to the board and will attempt to provide some slightly more abstract mechanisms for controlling servos in the future.
I am harnessing the pyserial library for serial port access under python. I've included a tar.bz2 of the library so you don't have to go search for it if you are feeling lazy like me when I install it on my various machines.
Cheers, -imoverclocked