Quitmeter
QuitMeter is a GTK application that monitors how long since you stopped smoking, displaying cigarettes not smoked, the amount of money/life saved, and some quit milestones as encouragement (taken from WhyQuit
Originally written in 2004 for the the USENET group alt.support.stop.smoking when I quit, updated in 2007 to use Python, and finally in 2010 to add the milestones.
Requires Python and PyGTK 2.10
