MarkNook is a fast, native Markdown viewer and editor for the Mac. Open any Markdown file, watch the live preview update while you type, and switch between editor, split view and preview with a click or a keyboard shortcut.

LIVE PREVIEW
The preview follows GitHub-flavored Markdown (GFM): headings, lists, tables, task lists, strikethrough, code blocks, links and images look exactly the way you expect. Links open in your browser, and the preview follows the system's light or dark appearance.

A REAL MAC EDITOR
The editor is a true native text view with undo, find and replace, optional spell checking and a crisp monospaced font. Smart quotes and automatic text replacement stay off, so your Markdown remains exactly what you typed.

MADE FOR YOUR WORKFLOW
- Editor, split and preview layouts, switchable with Cmd+1, Cmd+2 and Cmd+3
- Live word and character count
- Opens .md, .markdown and plain text files
- Automatic saving, plus rename, duplicate and revert from the title bar
- Full dark mode support

PRIVATE AND RELIABLE
MarkNook is fully sandboxed, shows no ads, contains no tracking and works completely offline. Your documents never leave your Mac.

Whether you keep notes, maintain README files or write documentation: MarkNook keeps Markdown simple.