>A simple licence that lets you publish your app with source code but stipulates that if you use it for commercial purposes, you must pay a fee. The source code

>A simple licence that lets you publish your app with source code but stipulates that if you use it for commercial purposes, you must pay a fee. The source code remains open forever. I realise this would violate the principle of OSS which states that source code should not be charged for Who states this? It would violate the principle all right, but for completely different reasons (not being able to restrict purpose of use) but you can charge a gorillion to obtain source if that's what you want. >It's also the option that doesn't exist. (Crazy?) Why is it crazy when it contradicts the entire reason for the existance of FOSS? The other problem with your idea is that it's very difficult to accurately define "commercial use". Enjoy paying all those lawyers you need to draft your commercial-restricted EULA.