Mark Carroll's Journal

I download my transactions (in CSV, though Nationwide do now offer a more standard format, IIRC) monthly, and have a python script that goes through them, classifies them (it remembers the answers, roughly) and spits out an email with what we spent on each class of thing (groceries / going out / fuel / etc.). The shortcoming is that it doesn't know about how the credit card bills break down, but it's BALGE of letting us keep track of where the money goes.