I use Ulysses (<a href="http:&#x2F;&#x2F;www.ulyssesapp.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.ulyssesapp.com&#x2F;</a>) but then again, it&#x27;s mostly for straight up text writing. As far as I know, it doesn&#x27;t support code highlighting.