OpenMark

Native Markdown Editor

Only for Mac

$5.99

Mac

The markdown editor macOS deserves. Open any .md file, rendered like a doc, and edit with syntax. KaTeX math, mermaid diagrams, tables, task lists, code blocks. OpenMark is a beautifully simple markdown editor built for macOS Tahoe. Open any .md file and instantly see it rendered with gorgeous typography, or toggle to code view for precise editing with syntax highlighting. No folders. No databases. No sync. Just open a markdown file and work. FEATURES - Rendered view — beautiful typography with inline diagrams and math - Code view — syntax highlighting with line numbers - Mermaid diagrams — flowcharts, sequence diagrams, Gantt charts rendered inline - Math/LaTeX — KaTeX rendering for equations and formulas - Liquid Glass design — feels like it was built by Apple - Export to PDF and HTML - Copy as Rich Text — paste formatted markdown into any app - Keyboard shortcuts for bold, italic, links, code, and more - Table of contents sidebar — jump to any heading - Interactive checkboxes — click to toggle task list items - Word, character, and line count - Quick Look extension — preview .md files in Finder - Dark mode and light mode — follows your system setting - Blazing fast — launches in under a second BUILT FOR SIMPLICITY OpenMark does one thing and does it well. It's the markdown editor for people who just want to open a file, read it, and edit it. No project management. No wiki features. No cloud accounts. Just markdown. PERFECT FOR - Developers who work with README files and documentation - Writers who prefer markdown for drafts and notes - Anyone who opens .md files and wants them to look great Set OpenMark as your default app for .md files and never think about it again.

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Bug fixes and rendering improvements: — Fixed nested bullet lists inside task list items — Fixed QuickLook preview for .md files in Finder — Fixed autosave conflict when reloading externally modified files — Improved code block and table styling in QuickLook preview

Version 1.0.2

The developer, Rotate, LLC., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    • Seller
      • Rotate, LLC
    • Size
      • 12.5 MB
    • Category
      • Developer Tools
    • Compatibility
      Requires macOS 26.0 or later.
      • Mac
        Requires macOS 26.0 or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © 2026 Rotate LLC
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.