The short answer. Typora is the one to pick if you want to stop thinking about the syntax and see the formatting as you type, and you are willing to pay once. CotEditor is the answer if you want a lightweight plain-text editor with Markdown highlighting and no preview pane at all. MacDown gives you the classic side-by-side preview for free, with the caveat that its own record says it has been unmaintained since 2020. Helix is here for a different reason: it is a modal terminal editor, so choose it only if you already live in the terminal.

This guide covers 5 markdown editors for macOS. Every fact below is drawn from the same verified records that back each app’s own page. The recommendations are our editorial judgment, not payment. Last verified 2026-10-05.

Quick comparison

App What it is Pricing Licence Version
Archimedes Markdown editor not published not published —
CotEditor text editor Open source not published 7.1.1
Helix text editor Open source MPL-2.0 25.07.1
MacDown Markdown editor Open source MIT 0.7.3
Typora Markdown editor One-time purchase proprietary 1.14

What actually decides this

  • How you see the result. Three models: a side-by-side preview pane, in-place rendering where the markup turns into formatting as you type, and no rendering at all. Each suits a different way of working, and none is universally better.
  • Whether the file stays plain text. The point of Markdown is that the file is readable without the app. Confirm the tool writes ordinary .md files and does not wrap them in a database, or you have chosen a note app by mistake.
  • Which extensions are supported. Tables, footnotes, maths and diagrams are not part of the original Markdown spec, so support varies. If your documents use them, check the specific syntax the editor understands.
  • Export. Getting from Markdown to a PDF or a Word file is often the real deliverable. Whether the tool calls an external converter such as Pandoc, and how much control it gives you over the output, decides how much post-processing you do by hand.
  • Maintenance. An editor is a small surface, so an unmaintained one keeps working for longer than most categories — but it stops tracking changes in the platform and in the Markdown ecosystem.

Our picks

  • Typora — It removes the preview pane entirely and renders formatting in place, with maths, diagrams and export handled inside the same window. Choose it when you want to write in the rendered view rather than beside it.
  • CotEditor — It is a lightweight plain-text editor for macOS with Markdown awareness, which suits people who would rather not split the window. Choose it when you want a light editor for plain text and Markdown without a preview.
  • MacDown — It offers live preview and syntax-highlighted fenced code blocks with HTML and PDF export — noting that its own record says it has not been maintained since 2020. Choose it when you want a free editor with a side-by-side preview.
  • Helix — It is a modal terminal editor with multiple selections, tree-sitter parsing and language-server support built in, which makes it a Markdown tool only as a side effect of being a general editor. Choose it when you already work in the terminal and want modal editing.

The apps

Archimedes

Archimedes is a Markdown editor for macOS. Native macOS Markdown editor geared toward mathematical writing with inline LaTeX support. Its pricing is not published.

What it does. Archimedes is a Markdown editor and LaTeX editor for the Mac and macOS that makes mathematical writing fun and easy.

Full profile and verified facts for Archimedes →

CotEditor

CotEditor is a text editor for macOS. Lightweight plain-text editor for macOS. It is open source.

What it does. Text Editor for macOS.

CotEditor is listed with current version 7.1.1.

Full profile and verified facts for CotEditor →

Helix

Helix is a text editor for macOS. Modal terminal text editor written in Rust, built around multiple selections as the core primitive, with tree-sitter parsing and language-server support out of the box. It is released under MPL-2.0.

Strengths. Multiple selections are a core primitive, so editing many places at once is the normal way to work rather than a special mode. Language-server support works with no additional configuration — completion, go-to-definition, documentation and diagnostics all come on by default. Tree-sitter parsing gives syntax-aware selection of functions, classes and comments as tree nodes.

Trade-offs. No tagged release since 25.07.1 in July 2025, even though development continues. No plugin system, so extending it means waiting for the feature to be built in. Modal editing with no modeless fallback, which is a hard barrier for some users. No release has been tagged since 25.07.1 on 18 July 2025, despite commits continuing into September 2026, so the newest installable build is over a year old. No plugin system: extensibility is limited to what the editor ships with and TOML configuration.

Not for. Anyone who wants a plugin ecosystem — Helix has no plugin system and is configured in TOML. Users who expect frequent releases; no version has been tagged since July 2025. People who want a graphical editor, since this runs in the terminal.

What it does. Multiple selections as the core editing primitive, so commands apply to every selection concurrently. Selection-then-action ordering, inherited from Kakoune, rather than acting first and selecting after. Tree-sitter parsing for syntax highlighting, indent calculation and code navigation. Language-server support with no additional configuration: completion, go-to-definition, documentation and diagnostics.

Helix is listed with current version 25.07.1.

Full profile and verified facts for Helix →

MacDown

MacDown is a Markdown editor for macOS. Open-source Markdown editor for macOS with live preview, syntax-highlighted fenced code blocks and HTML/PDF export, MIT licensed and unmaintained since 2020. It is released under MIT.

Strengths. Free and open source under the MIT licence, with no paid tier or account. Live preview of the rendered Markdown beside the source, which is the feature people came to Mou for. Highly customisable Markdown rendering rather than a fixed pipeline.

Trade-offs. No release since 0.7.3 in January 2020, and no repository activity since July 2023. Several hundred open issues with no maintainer activity to close them. No macOS requirement is published anywhere on the site or in the repository. The last release is 0.7.3, published 3 January 2020; the repository’s most recent push was July 2023, and it carries several hundred open issues. Neither the site nor the repository states a minimum macOS version.

Not for. Anyone who needs a maintained editor — the last release was January 2020. Users on Apple Silicon who need a confirmed native build; nothing states one. People who need a published macOS requirement, since the site states none.

What it does. Live preview of the rendered Markdown beside the source. Highly customisable Markdown rendering. Syntax highlighting inside fenced code blocks. Sophisticated auto-completion.

MacDown is listed with current version 0.7.3.

Full profile and verified facts for MacDown →

Typora

Typora is a Markdown editor for macOS. Minimal Markdown editor that removes the preview pane entirely, rendering formatting in place as you type, with maths, Mermaid diagrams and Pandoc export. It is released under proprietary. It is one-time purchase.

Strengths. According to the developer, live preview happens in place, removing the source-and-preview split that most Markdown editors keep. Maths through MathJax and diagrams through Mermaid are built in rather than added by plugins. Export through Pandoc covers PDF with bookmarks, Word, LaTeX, MediaWiki and ePub.

Trade-offs. A licence activates at most three devices at a time. There is no permanent free tier; the free option is a 15-day trial. According to the developer, requires macOS 11 or later, with older systems limited to a discontinued build. The 15-day trial is the only free tier; unlike some paid editors there is no permanently free limited mode. Typora publishes no machine-readable release feed and its macOS download link is versionless, so only the release line can be recorded: 1.14, dated 19 July 2026. The exact point release cannot be checked automatically.

Not for. Anyone who wants a linked knowledge base — Obsidian, Logseq and Joplin are built around connections between notes, which Typora is not. Users who need a free Markdown editor, since MacDown and MarkText are open source and cost nothing. People on macOS 10.15 or earlier: the newest build that runs there is a discontinued 1.4.8, and macOS 10.13 and older stop at a 0.9.9.x beta.

What it does. Seamless live preview: Markdown renders in place with no separate source or preview pane. Focus mode blurs everything but the current line, and typewriter mode keeps the active line centred. Maths support through MathJax, including mhchem, AMSmath and bbox extensions, with optional equation auto-numbering. Diagrams from text: Mermaid for flowcharts, sequence diagrams and Gantt charts, plus flowchart.js and js-sequence-diagrams.

Typora is listed with current version 1.14.

Full profile and verified facts for Typora →

How to choose

  • No licence fee, source available. CotEditor, Helix and MacDown — the source can be read and, under the terms of each licence, reused.
  • One-time purchase. Typora — you pay once.
  • Pricing not published in our data. Archimedes — check the developer’s own site before assuming anything about cost.

Open source: CotEditor, Helix and MacDown (3 of 5).

Common mistakes

  • Confusing a Markdown editor with a note app that stores Markdown. The question is who owns the file and what happens if you stop using the app.
  • Assuming an in-place renderer does not write plain text. Typora still saves a .md file; the rendering is a view, not a format.
  • Expecting tables, footnotes and diagrams to work everywhere. They are extensions, and editors disagree about which ones and how to spell them.
  • Opening the same file in two editors with different preview engines. One will show formatting the other does not, and it is easy to conclude the file is broken.

How this guide was put together

Each app’s facts come from its own record: the developer’s own pages and repository, the App Store listing where one exists, and the documentation, each with a source grade and an access date. Where a fact rests on the developer’s own statement rather than on something we verified independently, the sentence says so. Where our data has no value for something, the guide says “not published” instead of guessing.

A price appears here only where the record carries one from a stated source; the guide never estimates one, and it records the pricing model alongside so the two can be read together. Prices change and vary by region, so each app links to its own page for the current detail.

The facts and the recommendations are kept apart on purpose. Everything in the app entries, the comparison table and the answers above is composed from the records. The short answer, the criteria and the picks are our editorial judgment: they reflect what we would choose and why, and they are not paid for. Where we make a recommendation we name the condition it applies under, because we do not call anything “the best” without explaining the criteria.

Verified 2026-10-05.

Frequently Asked Questions

How do I choose between these markdown editors?

There is no single answer — it depends on what you need. This guide covers 5 markdown editors: Archimedes, CotEditor, Helix, MacDown and Typora. They differ mainly in pricing model, licence and the trade-offs each one carries. Pick by the trade-off you care about rather than by rank.

Are these markdown editors free?

Pricing across this group: not published (Archimedes), open source (CotEditor, Helix and MacDown) and one-time purchase (Typora). Where we list pricing as not published, the developer does not state a model we could verify — check their own site before assuming anything about cost. We quote a price only where the record carries one from a stated source, and we never estimate one. Prices change and vary by region and by store, so always check the developer’s own page for the current figure.

Which of these markdown editors are open source?

CotEditor (not published), Helix (MPL-2.0) and MacDown (MIT) are open source.

Do these markdown editors support Apple Silicon?

Apple Silicon support is explicitly stated for Helix. For the others our data does not carry an explicit statement either way, so we do not infer one.

How do I choose between them?

Start with how you pay: the guide groups these apps by pricing model, because the budget is the constraint most people actually have. Then check the trade-offs listed for each app: the limitations are the part that decides most people’s choice, because they describe what the app will not do for you.

Who should not use these apps?

Helix, MacDown and Typora each list an audience they are explicitly not aimed at. Those notes come from the same verified records as the rest of this guide, and they are worth reading before you install anything.

When was this data last verified?

The facts in this guide were last confirmed on 2026-10-05. Every app page carries its own verification dates and source list, so you can check any individual claim.