Free and open source

The next-generation Markdown editor.

You hold the pen. AI keeps your ink flowing.

For macOS, Windows, Linux, iPhone and iPad.

Textus with Hamlet and the reader’s notes on it open. Textus AI tightens the notes sentence by sentence, each change in the margin, and pins a review note beside the play.

Hamlet, William Shakespeare

Writing

What you see is what you get.

Hamlet, William Shakespeare

Formulas, tables, diagrams – done in a snap.

euler.md
Euler’s formula

For every real number ,

e^{ix} = \cos x + i\sin x

At it becomes Euler’s identity, .

Hamlet.md
Hamlet
Act
Words
Done
I
6,998
✓
II
5,915
✓
mermaid
Mind map of the characters in Hamlet
Timeline of Hamlet, act by act
Flowchart: draft, AI review, accept or not, revise, publish
Sequence diagram: a review request goes from Textus straight to your AI provider
Gantt chart of a thesis schedule

Your writing style? Your call.

Hamlet.md

Share it anywhere.

Export to PDF, Word, HTML and more.

Textus AI

Your writing assistant. It writes with you.

Grammar check

It catches every slip. The best editor you’ll have.

Review

Suggestions for your writing, and fresh ideas.

Continuation

Your writing assistant knows what you want to write next.

Revision

Sentence by sentence, it polishes your writing.

Skills

Proofread built in; tighten, translate, change the tone and more, a click away.

Grows over time

It learns your style, remembers what you ask for, and grows with you.

Hamlet, William Shakespeare

Any LLM you like.

Textus works with more than 20 LLMs, and with any LLM that offers an OpenAI-compatible API.

  • OpenAI
  • Claude
  • Google Gemini
  • DeepSeek
  • Grok
  • Mistral
  • Groq
  • OpenRouter
  • Kimi
  • GLM
  • Qwen
  • Ollama
  • Any OpenAI-compatible endpoint

Plugins

Make Textus yours.

Plugins and skills, a click away in Settings › Extensions — on the computer, and most of them on iPhone and iPad too.

  • Mind Map

    An outline becomes a mind map.

  • Vim

    Modes, motions and :wq.

  • Graph View

    Your notes and their links, as a graph.

  • Database Views

    A folder as a table, board or calendar.

  • Marp

    Slides from a document, the Marp way.

  • Zotero

    Cite from your Zotero library.

    Computer only
  • ECharts

    Charts from an ECharts option.

  • Version History

    Every save kept, any one back.

Browse all extensions

Privacy

What you write is yours alone.

  • On your device

    Documents are plain Markdown files, kept wherever you choose.

  • Keys kept locally

    API keys and sign-ins are stored only on your computer.

  • Straight to your provider

    AI requests travel directly from your device to the provider you pick.

  • No account

    Download it and write. There is nothing to sign up for.

  • No tracking

    No analytics, no telemetry, no ads.

  • Open source

    MIT-licensed and public, line by line, so anyone can verify all of this.

With a local model through Ollama, your words never leave your computer.

Download

Get Textus.

Free and open source, under the MIT license.

macOS

Apple Silicon

Download .dmg

Or with Homebrew

brew install --cask textus

iPhone and iPad: on the App Store soon (not yet in mainland China).

All releases on GitHub

FAQ

Questions.

Is Textus free?

Yes. It is free and open source under the MIT license, with no account and no subscription. If you use Textus AI, your provider bills you directly, or not at all with a local model.

Which platforms does it run on?

macOS (Apple Silicon and Intel), Windows and Linux, and iPhone and iPad from the App Store (not yet in mainland China).

Do I need an AI account?

No. The editor works fully without AI. For Textus AI, connect a provider of your own: sign in with ChatGPT or Claude, add an API key, or run a local model with Ollama.

Does it work offline?

The editor does, completely. Textus AI needs your provider, unless you run a local model.

Is it plain Markdown? What can I export?

Yes: plain .md files, with tables, task lists, footnotes, math and Mermaid. You can export to PDF, Word, HTML and more.