He hesitated. In his world, "free" usually meant a backdoor virus or a hollow shell of a program. But the audit was in twelve hours. He clicked.

: A cross-platform tool for Windows, Mac, and Linux used for analyzing and managing magnetic stripe data.

If you are looking for a free download, several options exist depending on your hardware and technical comfort level:

Do you need help or determining which card type (Hi-Co vs. Lo-Co) you should use for your project?

You can see the code, ensuring no "phone home" features or hidden backdoors.