GPKey is a software program which can be used as a serial number engine for different trialware or shareware applications. The program has a wide range of features, like a username to serial number calculator that generates usernames between 6 to 24 digits, including regular letters, numbers, Umlauts and a number of special characters or syntax that are based on more than 40 different calculations, partly based on a “back-relative” method.
It also has 19 check operations to ensure maximum security and a detailed description for easy installment and start of the program. GPKey is also readily compatible with several platforms like Windows 2000, Windows 95, Windows 98, Windows ME, and Windows XP.
GPKey can be used by anyone for generating serial numbers as well as usernames for different shareware applications or software that they want to test.