I am struggling with this question about a GitHub project of mine (MIT license). A client wanted me to customize it in a certain way and sell him the customizations (the customizations do not work without the base code though).
He will not be disclosing the source code, but he doesn't want to include any attribution or license information either, while still being allowed to legally use, sell and modify. Of course, I, on the other hand, don't want to take responsibility/give any guarantees/be liable.
I did some research and came up with the Unlicense
4 questions in direct connection with this issue:
- As far as I understand it, he would be allowed to distribute the source code under this license as well, is that correct, and if so, can I limit that?
- Is the Unlicense a good fit for the described purpose?
- Are there any fitting alternative licenses/agreements?
- Is me emailing him the code he bought together with the chosen License as textfile enough to complete the deal and make it legally bulletproof beyond a reasonable doubt?