I'm playing a lot with drafts, especially using markdown to punt stuff into evernote and day one etc. One of my favourite features is the ability to do pre-defined email actions. I've got one to send the text in drafts to my wife, one to myself etc.
Drafts has a lot of URL actions which it can use, including adding data into omnifocus etc. While I love that feature, it flips over to the app to confirm and complete the add. That disrupted my workflow a little, so I worked on a hack.
You can use the omnifocus mail drop (
http://www.omnigroup.com/support/sync/) to mail directly into your omnifocus database. By setting up an email action which sends the drafts text to that email address, you can process items within the app without any interruption.
You can also write actions for things like evernote to prepend/append data to specific notes, great for someday/maybe lists.
Really great app, active development and a great community behind it.