GitHub does render Org-mode documents to an extent. I haven't done a comparison with its Markdown rendering though. There do exist mobile apps for Org-mode, bu

GitHub does render Org-mode documents to an extent. I haven't done a comparison with its Markdown rendering though. There do exist mobile apps for Org-mode, but it's been a while since I've used them. I agree with your third point and wish that Org-mode support was better in non-Emacs editors.