Edit2:
Having read round some more, it seems you possibly could sell a different version, of course you would have to offer the source code which others would be free to give away, (this is for the gpl). I don't know if the discrimination clause of the Open Source Definition would come into play though.
Edit: I'm referring to https://opensource.org/osd
Edit2: Having read round some more, it seems you possibly could sell a different version, of course you would have to offer the source code which others would be free to give away, (this is for the gpl). I don't know if the discrimination clause of the Open Source Definition would come into play though.