ZenPen - A minimalist writing zone, where you can block out all distractions and get to what's important.
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.
Telescope - Telescope is an open-source app that lets you easily set up your own online community.
Calmly Writer - Distraction-free text editor for Mac, Windows, Linux and ChromeOS.
Typefully - Write & publish great tweets, without distractions
Stashany - Online notepad for developers