You can create time-limited, demo and non-expiring keys, create multiple keys in one click, quickly encrypt strings using your own private key and lock a license key to a particular machine. Serial Key Maker is a powerful program that enables you to create secure software license keys. The output can be saved as CSV or TXT documents. The sequence of numbers/digits can be defined in the application. You can generate serial keys using a custom number of columns and characters per column. Serial Key Generator is a program to help developers generate serial numbers for applications.