People that stacked Ulysses
I LOVE Ulysses for writing. My biggest use case right now is morning pages, where I just do some unstructured, flow of consciousness of writing every morning. Ulysses gives me this clean interface (the full-screen writing mode) to just focus on writing. Very zen!
If you're looking for the ultimate writing tool, make sure you definitely take a look at Ulysses. It has so many different ways to organize your files and I think the power of this is derived from the fact that all your writings are really in one pool. A brilliant writing tool!