Applications supporting CommonMark

CommonMark Editors

Caret
  ▸ Mac, Windows, Linux

Ghost
  ▸ Web

ghostwriter
  ▸ Windows, Linux
  ▸ With support for Pandoc and cmark.

Markdown Edit
  ▸ Windows

Markdown Editor
  ▸ Chrome app (Windows, Linux, Mac and ChromeOS)
  ▸ Works offline.

Markdown Editor for Visual Studio
  ▸ Supports multiple extensions.

Markdown Plus
  ▸ Windows, Mac
  ▸ Also supports GitHub Flavored Markdown, Markdown TOC (table of contents), footnote, task list, emoji, Font Awesome, mathematical formula, flowchart, diagrams, Vim mode, Emacs mode and a lot more.

MarkdownPad
  ▸ Windows

Markdown Writer FX
  ▸ Java JAR (Windows, Linux, Mac)
  ▸ An open source Markdown editor written in JavaFX 8.

TextNut
  ▸ Mac, iOS

Versatil Markdown
  ▸ Mac
  ▸ A notebook built around Markdown and CommonMark, with 1Password integration, HTML/CSS support, syntax highlighting, and more.

Visual Studio Code

CommonMark Misc.

Pandoc
  ▸ Converts between a multitude of document formats, supports CommonMark as both input and output.

Gitit
  ▸ A wiki backed by git and pandoc, supports pages in CommonMark.