PHP Shopping cart management (commercial license)
Commercial license to allow companies with more than 2 employees the use of the PHP Shopping Cart Management script on public websites even if they sell them to clients.
This script is open source. You can download it from its repository. You can also look at Trucs de Développeur Web's blog to read more behind the screen about this script and the others.
A lifetime commercial license of "PHP Shopping cart management" script for my company.