MacDown Alternative for Mac (2026)

Why Look for a MacDown Alternative?

MacDown was one of the most popular free Markdown editors for Mac, but the original project has not had a stable release since January 2020 (v0.7.3). The Homebrew cask macdown was deprecated and scheduled for removal in September 2026. On modern macOS, MacDown triggers Gatekeeper warnings, doesn’t run natively on Apple Silicon, and has 500+ unresolved issues on GitHub.

If you relied on MacDown and need a replacement, there are three solid options depending on your workflow: MDViewer for reading and reviewing, MacDown 3000 for a familiar split-pane experience, and MarkText for cross-platform WYSIWYG editing.

Quick Comparison

MDViewer is a free, native macOS Markdown viewer with inline editing, Git history, Mermaid diagrams, and a smart table of contents. Built with SwiftUI, actively maintained.

MacDown 3000 (v3000.0.7) is a community fork that picks up where the original left off — Apple Silicon native, folder workspaces, QuickLook extension, Mermaid v11, and Homebrew install. Install: brew install --cask macdown-3000

MarkText is a free, open-source Electron-based editor with WYSIWYG editing. Cross-platform (Mac, Windows, Linux), but heavier and less integrated with macOS.

Feature Comparison

Who Should Use MacDown

MacDown is a good choice if you want a split-pane writing environment where you see source and preview side by side. It still works for basic Markdown editing and supports LaTeX math, Graphviz, and code highlighting.

Consider MacDown (or MacDown 3000) if:

• You prefer a side-by-side editor + preview layout
• You want an open-source app you can modify
• You write Markdown with LaTeX math or Graphviz diagrams
• You need multiple preview themes for different contexts

Who Should Use MDViewer

MDViewer is designed for people who read Markdown more than they write it — developers reviewing READMEs, specs, and documentation. It opens files instantly, shows them rendered, and lets you navigate with a smart table of contents.

Choose MDViewer if:

• You want a modern, maintained app with native Apple Silicon support
• You need Git history and diffs without opening a terminal
• You want Mermaid diagrams that actually render (broken in MacDown v0.7.3)
• You need tabs to keep multiple files in one window
• You want a default .md app that opens from Finder without security warnings
• You want a table of contents that tracks your scroll position

When MacDown Is the Better Choice

If your workflow is writing-first — drafting blog posts, papers, or documentation — MacDown’s split-pane layout gives you constant feedback as you type. You see source on the left, rendered output on the right, in real time.

MacDown also supports Graphviz diagrams natively, which MDViewer does not. If you use Graphviz for graphs and flowcharts, MacDown handles that out of the box.

When MDViewer Is the Better Choice

If you spend more time reading Markdown than writing it, MDViewer is purpose-built for that. It renders files instantly, tracks your position with a table of contents, and lets you browse Git history without leaving the app.

MDViewer is also the practical choice if you care about maintenance and compatibility. The original MacDown triggers Gatekeeper warnings, doesn’t run natively on Apple Silicon, and has 500+ unresolved issues. MDViewer is signed, notarized, and actively updated.

What Is MacDown 3000?

MacDown 3000 is a community fork that picks up where the original MacDown left off. Maintained by Schuyler Erle, it’s a free, open-source (MIT) Markdown editor that keeps the familiar split-pane layout while adding modern macOS support.

MacDown 3000 Features

• Apple Silicon native — runs on M1/M2/M3/M4 without Rosetta
• Homebrew install — brew install --cask macdown-3000
• Folder workspaces — browse a folder of .md files in a hideable sidebar
• Mermaid v11 — diagrams render in the preview pane
• QuickLook extension — preview .md files in Finder with spacebar
• Gatekeeper signed — no security warnings on install
• macOS 11+ — works from Big Sur to the latest macOS

The current version is v3000.0.7. The project homepage is macdown.app.

MacDown 3000 vs MDViewer

MacDown 3000 is a writer’s tool — you type on the left, preview renders on the right. MDViewer is a reader’s tool — it opens files rendered by default, with Git history, table of contents, and fast file switching via tabs.

If you’re replacing the original MacDown and want the same split-pane workflow, MacDown 3000 is the closest successor. If you read more Markdown than you write and want Git integration, MDViewer is the better fit.

The tradeoff: MacDown 3000 is maintained by a solo developer, and it’s still a Cocoa app — functional but not built with the latest Apple frameworks.

Can You Use Both?

Yes. Set MDViewer as your default .md app for quick viewing and reading. Use MacDown (or MacDown 3000) when you want to write in split-pane mode. They don’t conflict.

Migrating from MacDown

Switching from MacDown is straightforward — your files are plain .md text, so there’s nothing to convert or export.

Option A: Switch to MDViewer (reading-focused)

1. Install MDViewer — download the free app, drag to Applications
2. Set as default — right-click any .md file → Get Info → Open with → MDViewer → Change All
3. Uninstall MacDown — drag MacDown to Trash, or brew uninstall macdown

Option B: Switch to MacDown 3000 (writing-focused)

1. Install via Homebrew — brew install --cask macdown-3000
2. Set as default — right-click any .md file → Get Info → Open with → MacDown 3000 → Change All
3. Uninstall old MacDown — brew uninstall macdown

Both options take under a minute. Your files work as-is — plain .md text is universal.

Try MDViewer

MDViewer Lite is free. Pro adds editing, Git history, and PDF export for $9.99. Download and see if it fits your workflow.

Requires macOS 13.0 or later. Intel and Apple Silicon.