AFAIK, no, unless specified otherwise in the plugin's Terms of Service, if any.
But this should give you an idea about what to expect: https://www.atlassian.com/licensing/marketplace#generalmarketplacequestions-6
It started as any story starts, on a normal, rainy day. Admin meets App, and her name was Klok2, and like any first relationship we were both trying to make it work but neither one knew what...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG