While not technically released yet, you can now take a gander at the new Ionic Market a market.ionic.io. The Ionic Market contains Starters (things to help you jump start a new project), plugins, and themes.
As an example, I turned my Ionic RSS Reader into a project: http://market.ionic.io/starters/rssviewer
Market assets are both free and commercial and anyone can submit a resource for the store. As I said, it isn't really released yet, so now is a great time to check it out and provide feedback to the Ionic folks!