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brew install --cask catvinci-studio/tap/textus

Windows

x64

Download .exe

Linux

x64

Download .AppImage

Also as .deb · .rpm

iPhone and iPad: coming soon.

All releases on GitHub

Writing

Made for writing.

What you see is what you get.

Every Markdown mark, rendered as you write. Point at a line to see its Markdown.

Hamlet.md

Hamlet¹

# Hamlet[^1]

Act III, Scene I

## Act III, Scene I

O, what a noble mind is here o’erthrown! The courtier’s, soldier’s, scholar’s, eye, tongue, sword, Th’expectancy and rose of the fair state, The glass of fashion and ~~the mould of form~~, Th’observ’d of all observers, quite, quite down!

**O, what a noble mind is here o’erthrown!** The *courtier’s, soldier’s, scholar’s*, eye, tongue, sword, Th’expectancy and ==rose of the fair state==, <u>The glass of fashion</u> and ~~the mould of form~~, [Th’observ’d of all observers](#), quite, quite down!

Formulas, tables, diagrams.

Math renders as you type, tables line up, and a few lines of text draw a diagram.

euler.md

Euler’s formula

For every real number $x$ ,

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

e

e

e^{i}

e^{i x}

e^{i x} =

e^{i x} = cos

e^{i x} = cos x

e^{i x} = cos x +

e^{i x} = cos x + i

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

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

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

At $x = π$ it becomes Euler’s identity, $e^{iπ} + 1 = 0$ .

Hamlet.md

Hamlet

Act	Words	Done
I	6,998	✓
II	5,915	✓

mermaid

Your writing style? Your call.

Four writing modes, any theme you like – Typora themes included.

Hamlet.md

Hamlet

Act III, Scene 1

HAMLET.

To be, or not to be, that is the question:
Whether ’tis nobler in the mind to suffer
The slings and arrows of outrageous fortune,
Or to take arms against a sea of troubles,
And by opposing end them?

To die—to sleep, no more.

# Hamlet

## Act III, Scene 1

**HAMLET.**

> To be, or not to be, that is the question:
> Whether ’tis nobler in the mind to suffer
> The slings and arrows of outrageous fortune,
> Or to take arms against a sea of troubles,
> And by opposing end them?

*To die—to sleep, no more.*

Hamlet

Act III, Scene 1

HAMLET.

To be, or not to be, that is the question:
Whether ’tis nobler in the mind to suffer
The slings and arrows of outrageous fortune,
Or to take arms against a sea of troubles,
And by opposing end them?

To die—to sleep, no more.

Esc to leave zen mode

Share it anywhere.

Export to PDF, Word, HTML and more.

AI

It suggests. You decide.

Textus AI helps at every step. Every word stays yours.

Continuation

Pause, and the next words appear in grey. Tab takes them.

AI writing

Edits arrive as proposals, each with a reason. Take one whole, or sentence by sentence.

Proposed editTighter, and the meaning stays.

My liege and madam, to expostulate What majesty should be, what duty is, Why day is day, night night, and time is time Were nothing but to waste night, day and time.

Your noble son is mad.

To die—to sleep, No more; and by a sleep to say we end The heart-ache, and the thousand natural shocks That flesh is heir to.

To die is to sleep, and sleep ends the heartache and the body’s thousand shocks.

AcceptAccept 1 of 2Reject

Grammar check

Typos and grammar are flagged as you write, along with your own conventions. Alt+Enter fixes them.

Review

Comments pinned to the lines they mean. Notes, not rewrites.

Built-in skills

Tighten, proofread, translate, change the tone and more, one slash away.

It knows you

It learns your style, remembers your characters and places, and follows your instructions.

Hamlet, William Shakespeare

Use the AI you prefer.

Sign in with ChatGPT or Claude, add an API key, or run a model on your own computer.

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

Privacy

Private by design.

Your writing stays yours. Textus is built so that it can, and its code is open so that anyone can check.

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.

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 on Apple Silicon, Windows and Linux. iPhone and iPad are coming.

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.

The next-generation Markdown editor.

Get Textus.

macOS

Windows

Linux

Made for writing.

What you see is what you get.

Hamlet¹

Act III, Scene I

Contents

Dramatis Personæ

Formulas, tables, diagrams.

Euler’s formula

Hamlet

Your writing style? Your call.

Hamlet

Act III, Scene 1

Hamlet

Act III, Scene 1

Share it anywhere.

It suggests. You decide.

Continuation

AI writing

Grammar check

Review

Built-in skills

It knows you

Use the AI you prefer.

Private by design.

On your device

Keys kept locally

Straight to your provider

No account

No tracking

Open source

Questions.