DebtPayoff is an application which can help you pay off your debt a bit wiser if not quicker.
I discovered that at the current rate it would take far longer to pay off my debt than I had expected. Since this program is written in Java, it will run on Windows (95, 98, NT, 2000, ME, XP), Linux, Mac, Solaris and a great many other Operating Systems.
With this program you can see:
How many years/months it will take you to pay off your credit card
The actual date the card will be paid off at the current rate
A payment by payment breakdown of what you will spend
How much will be spent on interest overall at that rate.
You can also use this for other loans. For instance, I use it for my college loan.
The hope is that by seeing how much overall you will save by paying an extra $10 or $20 per month, you will be greatly encouraged to pay the debt off that much faster. This application was written in 100% pure Java, so you will need to download sun's Jave Runtime Environment(JRE).