I like Workflowy for rapid outlining, but usually find doing it in Evernote or Google Docs to be…
Tiago Forte

Workflowy is REALLY cool - I highly recommend checking it out further. It’s great for multi-level outlines - where you can drill further and further down, but then minimize whole sections or focus on other sections, so that you just see what you need to see, when you need to see it.

I use Evernote as my digital filing cabinet - it’s great for storing everything I might want to look up one day, but Workflowy makes taking notes much more pleasurable, and they end up more organized too.

There are lots of keyboard shortcuts too, which gets my vote any day!