Gutter: Markdown Editor

Fast Markdown Editor & Preview

Only for Mac

$0.99

Mac

Fast, native Apple Silicon Markdown editor featuring GitHub Flavored Markdown (GFM) pipe tables, split live preview, themes, line numbers, and companion CLI tool. Gutter is a high-performance Markdown editing utility designed specifically for Apple Silicon and modern macOS. Built natively with Swift and AppKit, Gutter pairs an instant, synchronized two-pane editor with a modern GitHub Flavored Markdown (GFM) engine powered by swift-cmark. KEY FEATURES: * GitHub Flavored Markdown (GFM) Tables First-class support for aligned pipe tables, strikethrough, autolinks, and interactive task lists. * Bidirectional Scroll Sync Real-time, latency-free scrolling between the raw Markdown editor and the live HTML preview. * Vertical Line Numbers Gutter Clean, non-intrusive vertical line numbering with dynamic gutter alignment. * Formatting Ribbon and Keyboard Shortcuts Rapid-access toolbar and standard shortcuts for headings (H1 to H3), bold, italic, inline code, links, and bulleted lists. * Configurable Soft and Hard Breaks Easily toggle between strict CommonMark soft breaks and GitHub-style line breaks directly in Settings. * Themes and Dark Mode Includes four built-in themes (GitHub Light, Dracula Dark, Solarized Light, Tomorrow Night) plus full support for custom CSS stylesheets. * Native Export Export your styled documents directly as PDF or standalone HTML files. * Terminal Companion CLI Ships with an integrated command-line tool (gutter) allowing you to open documents directly from Terminal or render markdown headlessly to HTML. * Privacy First No accounts, no tracking, and no subscriptions. Runs inside Apple's secure App Sandbox.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Calum MacLean, 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
    Calum MacLean
    Size
    3.3 MB
    Category
    Developer Tools
    Compatibility
    Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    • Mac
      Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Little Dynamite Labs
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

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

    More by Calum MacLean