I officially released SecEd into the public domain today, you can find it here.
SecEd was written using Python 2.7 and the wxPython 2.8 package. It allows you to securely edit sensitive data. It also has a feature that allows you to rate the strength of your password.
Because it is written in Python it is portable and because it is open source you can use it to learn about wxPython and/or teach me more about it.