My favourite distraction free editor for Web publishing is Byword. Byword is reasonable, flexible and powerful.
However, Ulysses III has usurped the role of my editor of choice. Remove the side bars and all the other paraphernalia and it is as distraction free an editor as Byword.
Ulysses III is designed as more than a Markdown editor. It is pricy relative to Byword and works adequately with Dadaleus Touch its IOS counterpart. What I love about Ulysses III is it keeps all the documents you write in a database and thus it is easy for me to track what I’ve written and also where things are.
Ulysses III is an excellent tool which has become instrumental to my workflow. I use it in conjunction with Marsedit for offline publishing and the two make a fantasitic duo.
As such, Ulysses III is an editors choice.