Skimmy

· macos markdown editor

A fast, native macOS markdown editor and previewer. Built for Apple Silicon on macOS 26 or later. Free, signed, no Electron.

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Signed with an Apple Developer ID and notarized by Apple. Opens cleanly on any supported Mac with no Gatekeeper warnings.

Features

  • Native NSTextView editor with full undo/redo, system find bar, and monospaced font.
  • WKWebView preview with GitHub-flavored markdown rendering.
  • Tabbed sidebar: heading outline and link index.
  • Native .md, .markdown, and .mdown file handling with Open, Save, and Recents.
  • Light and dark theme that follows your system setting.
  • Adjustable font size, persisted across launches.

Keyboard shortcuts

  • ⌘E: toggle edit and preview
  • ⇧⌘L: toggle sidebar
  • ⌘F: find
  • ⌘+ and ⌘-: zoom

Install

  1. Download Skimmy.zip.
  2. Double-click to unzip.
  3. Drag Skimmy.app into /Applications.
  4. Double-click to launch.

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