Tree - Write documents in tree-like organisation with Markdown
Dataset Search - Making it easier to discover datasets. Made by Google.
TabNotes - Markdown notepad in your new tab
Medium - Welcome to Medium, a place to read, write, and interact with the stories that matter most to you.
NotePlan - Make plans inside an individual markdown note for every day in your calendar. Use it as a journal for your daily tasks and plan todos in advance. For Mac, iPhone and iPad.
Words - Software for improving your english vocabulary.