[lutusp]

> Well we have no contract about anything what so ever.

Actually, with respect to OSTicket, you do. OSTicket is licensed under the GPL, which means that anything you write based on it is also GPL-licensed. Which means you cannot publish or offer it without also releasing your own source for anyone else to use or modify.

In GPL open source, everyone needs to acknowledge everyone else's copyrights, but no one is prevented from using the code in any way they please -- as long as they release their own source code.

> If they want one like it, they need to build one them selves or purchase it from Sam.

Before you get into trouble, you need to learn the rules of open-source.