MondoWrite
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Free writing software for novelists and screenwriters

Build your novel or screenplay on an open canvas: ideas, characters, places and scenes, linked together. Your story bible, outline, manuscript and screenplay editor stay in sync, all the way to a print-ready Amazon KDP paperback. Your writing stays on your computer.

Version 1.0.0 Open source, GPL-3.0 No account, no subscription English and French

The MondoWrite canvas: loose ideas, sorted in one click.

To write a novel

Three acts, Save the Cat or the hero’s journey, character profiles, chapters, a manuscript laid out as book pages, export to Word, PDF and EPUB.

To write a screenplay

Industry-format editor, step outline, page and minute count, Fountain file, Final Draft import and export, standard PDF.

To self-publish

Print-ready Amazon KDP paperback interior, cover template with calculated spine, table of contents, copyright page and an “Also by” page.

Demo

MondoWrite in 80 seconds

Video presentation of MondoWrite, writing software for novelists and screenwriters Play the presentation · 1 min 20

The video is hosted on YouTube. Nothing loads from YouTube until you press play. Learn more

Features

From the first idea to the printed book

Every card on the canvas feeds the bible, the outline and the text. Rename a character and the name changes in the manuscript too. Move a scene in the outline and it moves on the canvas too. You never write the same information twice.

A story bible and character profiles that fill themselves in

Every card becomes an entry, filed by section, with its photo gallery and links. Nothing to copy over: the bible updates whenever the canvas changes, and exports to PDF or Word.

  • A character’s engine in three boxes: Wants, Needs, Wound.
  • An assistant that asks, one question at a time: past, body, voice, emotions, relationships.
  • The relationship map links portraits with the canvas threads.
  • The project cover: logline, synopsis, comps, genre and tone.
Why MondoWrite

Writing software that’s free, open, and respects your work

Free, and it will stay free

MondoWrite is free software under the GPL-3.0 licence. No subscription, no premium tier, no locked features. The code is public: anyone can study it, change it and share it.

Source code on GitHub

Your writing, on your machine

Nothing in a proprietary cloud, nothing to train an AI. A project is a folder of Markdown files, readable in Obsidian, Typora or any text editor. Edit it elsewhere and it reloads on its own.

Offline, no account

Writing comes first

Double-click or press N: the card appears and you type. Paste a link, an image, a PDF or a scene heading and the right card is made. Open a Scene card full size and write right inside it.

Built-in illustrated guide (F1)

In charge of your AI

MondoWrite works entirely without AI. If you connect one, locally or with your own key, it asks and it sorts. It never writes for you.

AI instructions published
AI, if you want it

A writing AI that asks questions, not one that writes

It reads your story world to put it in order and flag what doesn’t add up. Nothing changes in your project without your say-so.

Check consistency

Flags possible contradictions between your cards (an age, a date, a place), as questions.

Sort your ideas

Suggests a type for each loose idea. You apply or ignore, one at a time.

Tailored questions

In the character assistant, a question based on what the profile already says. You do the answering.

Character summary

Puts what you wrote back in order, without inventing anything.

Describe a photo

Notes a place’s light and mood, or a character’s appearance, field by field, for you to accept or not. It identifies no one and never guesses origin, religion, health or personality.

What it will never do

  • Write your book or screenplay for you.
  • Change a card without your approval.
  • Switch itself on without you connecting it.
LocalOllama or LM Studio: your text never leaves your computer.
Your keyClaude, OpenAI or OpenRouter. The key stays on your device, never in the project.
Import & export

Bring your manuscript. Leave with every format.

A Word manuscript becomes a novel project, split into chapters and scenes. A Final Draft or Fountain screenplay becomes a screenplay project, its cards already linked.

Import

NovelWord (.docx), Markdown, text
ScreenplayFinal Draft (.fdx), Fountain

Export

ManuscriptPDF, Word, EPUB, Markdown
PaperbackKDP interior PDF and cover
ScreenplayPDF, Fountain, Final Draft
Bible & canvasPDF, Word, Markdown, PNG
le-phare/
├── cartes/
│   ├── ines-morvan.md
│   └── phare-de-kerlann.md
├── manuscrit/
├── scenario.fountain
├── medias/
├── corbeille/         # restorable
└── markdown/
    └── versions/      # one copy a day

--- cartes/ines-morvan.md
---
id: k3x9a7bq2m
type: personnage
title: "Inès Morvan"
---
Relief keeper.
Can’t stand **silence**.
Download

Download MondoWrite for free

For Mac (Apple Silicon and Intel), Windows and Linux. Updates then arrive in one click, inside the app.

v1.0.0 Latest October 15, 2026

macOS

Open the .dmg and drag MondoWrite to Applications. The app is signed and verified by Apple.

Windows

The app isn’t signed yet: if SmartScreen appears, click “More info”, then “Run anyway”.

Release notes

What’s new

1.0.0Full notes

Version 1.0: the guide and synced moves

  • Illustrated user guide in English and French, one key away (F1), from Settings or the Help menu on Mac.
  • Synced moves: moving a scene or chapter in the outline, manuscript or step outline moves it on the canvas too.
  • Mac menu bar in the app’s language, screenplay editor fixes. Your projects stay compatible.
0.1.13Full notes

Paperbacks, import and scene status

  • Amazon KDP paperback export: print-ready interior PDF and cover template, four trim sizes, paginated contents.
  • Import a Word, Markdown or text manuscript, or a Final Draft screenplay, from one “Import…” button.
  • Scene status (draft, to revise, done) and a manuscript that scrolls as one.
0.1.12Full notes

Writing from the card

  • A Scene card opened full size becomes a writing page, in prose or screenplay format.
  • Find and replace, and rename a card everywhere in the text.
  • Typography as you type, French or English style.
0.1.11Full notes

Spotlight and filters

  • Every card carries its type colour; the spotlight fades the rest of the canvas around it.
  • Filters to hide card types, or show only one card and its neighbours.
  • Files changed outside the app reload on their own, without overwriting anything.
0.1.10Full notes

A new identity

  • New icon: an M drawn as a constellation, with one star lighting up.
  • Locked frames hold their cards.
FAQ

Frequently asked questions

What free software can I use to write a novel?

MondoWrite is free, open-source writing software (GPL-3.0) for Mac, Windows and Linux. It brings together an idea canvas, a story bible with character profiles, a novel outline (three acts, Save the Cat, hero’s journey), a manuscript laid out as book pages and export to Word, PDF, EPUB and KDP paperback. No subscription, no paid tier.

Can I write a screenplay with MondoWrite?

Yes. A project can be a novel or a screenplay, and switch at any time. The screenplay editor follows standard format (scene headings, action, characters, dialogue, parentheticals, transitions), counts pages and minutes, and saves in Fountain. It imports and exports Final Draft (.fdx) files.

Can I publish my book on Amazon KDP with MondoWrite?

MondoWrite prepares your paperback interior as a print-ready PDF and a correctly sized cover template for Amazon KDP, with the spine calculated from the page count. A warning tells you if KDP would reject the file. You then upload to KDP from your Amazon account.

Can I import a manuscript I’ve already started?

Yes. A Word (.docx), Markdown or text file becomes a novel project, split into chapters and scenes. A Fountain or Final Draft screenplay becomes a screenplay project, with its Scene, Character and Location cards already created and linked.

Where is my writing stored?

In the folder you choose on your computer, as Markdown and Fountain files. MondoWrite has no account and no server. To work across computers, put the folder in iCloud Drive, Dropbox or OneDrive. If you connect an online AI, only the passages it analyses are sent to that provider.

Do I need AI to use it?

No. Every writing, outlining and export feature works without AI. It stays an option, local (Ollama, LM Studio) or with your own key, and it never writes for you.

Is there an iPad, iPhone or Android version?

Mobile apps are planned: the interface already handles touch. Sync between devices will follow, then collaboration.

Contact

A question, an idea, keen to test?

MondoWrite is made by an author, for novelists and screenwriters. Your feedback shapes the next versions: tell us what you’re missing.

By email

contact [at] mondowrite [dot] app

Found a bug?

Report it on GitHub to follow the fix, or talk with other writers in Discussions.

Send a message

Your ideas are already here. Give them a world.

Download MondoWrite