I have written a simple but effective tiny CRM in PHP using a MySQL database. Now I want to offer my code for sale. I think the value of my proposition should be in the flexibility in use. So I want to allow anybody who buys my scripts to freely hack, edit or reuse my code as long as they are not reselling it as CRM software. (if needed, more context is written on my simple CRM website - still under construction)

Second thing important: Although I wrote the scripts and want to sell them. I am not planning to offer any support. I will install and deliver a working thing on the hosting account of my customer.. but after that the customer must be willing to dive into the scripts himself whenever he/she wants to alter anything.

Question is: How do I license this?