[retrac]

My subjective impression is that Mac is the platform where a user is most likely to be willing to pay for a polished Cocoa-integrated Mac-friendly supported build of what is otherwise an open source package that they could build themselves. (Building it yourself derails the vast majority of would-be users right there, and they'll just buy it or give up.)

[endore8_]

Yeah, that is a good point. My fear is about those few who can fork and make it available for free for everyone.

[retrac]

You can use trademark to prevent someone from calling it the same name.

Or perhaps open-source the core library while leaving the Mac specific code under proprietary copyright.

[endore8_]

Yep, it got me thinking maybe I can open parts of the codebase that have less business value and see how it develops.