Q10 is s a writing app for Windows. It doesn’t have a toolbar, to help keep you focused on writing, and it’s extremely lightweight unlike a lot of other word processing applications. You can set timers to help keep you on task. You can download a version that has spell checking, which is a must for me personally.
I would recommend Q10 if you’re looking for a writing app without all of the bells and whistles – that end up becoming distractions – and just want to focus on writing.