WriteNext - The writing application that boosts your writing. Increase focus and writing performance and reduce distractions by separating your creative writing from other activities. Let writing be the only activity you perform in the writing application.
Writebox - Writebox is a simple and distraction-free text editor for Chrome and iPhone/iPad.
Crossnote - Crossnote is probably the world's first markdown notes reader & editor Progressive Web Application that works offline and supports syncing with arbitrary git repository right inside your browser.
Calmly Writer - Distraction-free text editor for Mac, Windows, Linux and ChromeOS.
Cold Turkey Writer - Cold Turkey Writer won't let you quit until you finish your work. Like, literally will not quit.
JDarkRoom - A free simple, uncluttered, text editor in Java