Someone I know asked me for a favour. They made an agreement with a software firm for some custom software for basically inventory on a web interface, generic DB+webserver. They need me to do updates to it as a favour.

It's handoff time. The guys are giving him some trouble. I let them know if I need to do maintainence and whatnot, I need the source code. The guys are saying no. I recommended we use a licence that basically says "Buyer can modify the software and source code, but not distrobute it. Creator can distrobute the software and whatever they want".

I've looked around, and I saw recommendations for :

• source code escrow
• internal-use license
• Modified Source Code License
• custom Restricted Source Code License
• internal modification only licence

anyone have recommendations of specific licences?