I'm wondering, which kind of licensing and/or distribution options I have for applications using the Fiery API.

Is it possible to distribute a Fiery API aware application as Open Source (e. g. on Github)?
Is it possible to release it commercially (closed source) as a paid or free application?
Is it possible/allowed to acquire some kind of developer key for this kind of distribution, in order to avoid having the end user to enroll for an own access key?

Thanks for any help!