I’ve long since moved all my writing—at least all my new writing—to Org mode. It does everything I need and let’s me stay in Emacs. Different folks favor different strokes, of course, so it’s always interesting to see what they are and especially how they use Emacs to scratch their itches.
Azer Koçulu recently moved to Linux from macOS and wanted to bring his writing protocol with him. He was using iA Writer on his Mac but it wasn’t available on Linux. Koçulu decided to see if he could recreate the iA Writer experience in Emacs. He was happy with the result and documented what he did in a blog post. It turns out that it’s pretty easy to set up an iA Writer environment in Emacs. I’m not an iA Writer user so I can’t say how well it recreates the experience but Koçulu is happy with it.
There’s probably a larger lesson here. If you really like some writing tool but need to move to an environment that doesn’t support it or want to move to Emacs for your writing for some other reason, Emacs probably has you covered. Koçulu shows you how to do it for iA Writer and here’s a video showing how to do it for Scrivener. Doubtless solutions exist for other tools too.