Are You Human? is a script that uses a graphical test to insure that a human is being dealt with rather than a script. This is useful to avoid automated Web signups or automated attempts to crack passwords. There are many equivalent libraries for other languages but this is the first one for Python. The Python Imaging Library (PIL) is required.
BOTEC is a simple but useful calculator that assists with astrophysical, orbital mechanics, and space navigation calculations. It is a "back-of-the-envelope calculator" rather than an industrial-strength calculator, although this may change in the future. It is primarily intended for people familiar with physics and Python, and as such is unlikely to be useful to the average end user. It includes solar system data, and all values are strictly in SI units.