Export Org mode files to OPML: https://github.com/edavis/org-opml
I think OPML[1] is way more powerful and interesting than most people realize. It could be the lingua franca of transmitting structured information if more tools supported it.
My problem was I couldn't find an outliner I was happy with. Then I remembered using Org mode a few years back and decided to dust it off again. Turns out it has a very powerful export engine and I was able to whip something together pretty easily.