For "Experimenting With Babies," I used Google Drive for rought-draft stuff, then switched to OpenOffice. By the time you're passing it back and forth with your editor, you'll need to be using something that's compatible with Word, because that's what your editor will be using (assuming you're working with a traditional publisher).

For "Correlated," I used a lot of natural-language generation, so I suppose you could say that my editor was Sublime Text, at least for the drafts. Then ported into Word format.