Apple - Which application to preview .md files?

The superuser question, Markdown Live Preview Editor?, provides a wealth of options:

• BBEdit
• TextMate
• Mou
• Marked
• MarkdownLive
• Atom
• Marked 2
• MacDown

In additional to those, you can install a markdown QuickLook plugin for Finder based previews.

MarkdownLive

Mou

Marked 2

I would like to add the excellent - and open source - MacDown to the list.

Visual Studio Code

Source: https://code.visualstudio.com/docs/languages/markdown#_markdown-preview

Microsoft's Visual Studio Code has been surprisingly pleasant to use as a general purpose IDE, and elegantly renders markdown.