As part of my NanoWriMo effort (see thread
here) I have tried exploring some other ways of entering text than my normal go-tos VIM and LibreOffice. When writing prose I find I don't need the formatting buttons, tool box etc visible at every moment. I looked around and found
Focuswriter.
This free text editor exists for Windows, Mac and Linux and I've found it really nice to work with. I pulled and compiled the latest development version off github, but there are stable binary packages/installers available for all operating systems on their homepage (and linux distros usually have it in their repositories).
For my NaNoWriMo effort I made myself a fantasy/book theme that looks like this:

(search Google-images for "focuswriter theme" to get more examples.).
As you can read in the screenshot above, Focuswriter is run in full-screen and you move your cursor to the edges of the screen to access menus (but most things can be done swiftly with keyboard shortcuts).
For NaNoWriMo it conveniently displays all information you need (I have a feeling NaNoWriMo influenced it a bit). It otherwise has all the basic text editor features you expect, like copy&paste, left/middle/right align, bold/cursive/underline, spell checking and things like that. It also allow you to mark blocks of text e.g. with "***" to separate "scenes". You then get a list with scenes you can quickly jump to or even rearrange in a different order if you change your mind about your story. It's still quite clear that this program is mainly aimed at the actual creation of the story though, not for the revision/postediting (for that a more full-featured formatting editor like libreoffice is better).
I also happen to be among those that really enjoy the optional typewriter sounds it can play when you type - it's a little gimicky but it really feels like you are getting things done!
Anyway, Focuswriter is small, fast and free - worth checking out if you enjoy writing.
.
Griatch