Discussion board where members can learn more about Integration, Extensions and API’s for Qlik Sense.
Where can publish my Sense extension or app (like QlikMarket)?
Go for Branch: branch.qlik.com
Just asked the question during the Q&A Panel (Leslie Bonney and Anthony Deighton answered). QlikMarket will have a Sense section. And you´ll be able to buy e.g. an extension with a credit card in QlikMarket soon.
But still no solution to tie an extension to a Qlik Sense license and to protect copying..