Not to my knowledge. Best I can offer is you keep these two following links handy. This first link is our documentation about add-ons in OnDemand along with some general info and the second link takes you to marketplace and only lists add-ons for OnDemand:
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
We're bringing product updates and pro tips on teamwork to ten cities around the world.Save your spot