You Are the Author
Every word comes from your hand. AI does not draft chapters or write paragraphs — it appears only when you need it.
You are the author. AI is the editor. Never ghostwritten.
For serious literary fiction and academic writing: AI works like a senior editor, reading your drafts, pointing out problems and explaining its reasoning — while every single word is written by you.
We never steal, never sell, or train on your manuscripts — they stay yours. Privacy Policy →
Philosophy
You Hold the Pen — Always
AI's value is not writing for you; it is helping you see what you have already written more clearly.
AI Is the Editor
It works like an editor: reading, commenting, pointing out problems and explaining its reasoning. Paragraph, chapter, full text or attachment — you choose the granularity.
Never Ghostwritten
No one-click full text, no "write a paragraph for me". Every path in the product keeps authorship in your hands.
Features
Designed for Writing, Restrained for Authors
No feature bloat — only what makes writing and revising easier.
Review at Every Scale
Paragraph, chapter, full text or attachments (outline / worldview / characters / relations) — switch scope as you need. Reviews automatically include your attachments and the preceding context, so the advice is grounded in your work.
Three Editing Styles
Strict, gentle or encouraging — like hiring editors of different temperaments. Switch anytime mid-writing.
Revision History
Every save keeps a new version, with the full history of every paragraph and attachment. Took a wrong turn? Go back to any of them.
Preset Templates
Novel, essay and other templates each define the attachments to maintain and how they are reviewed — ready to use, and adjustable to your habits.
Import & Export
Import existing drafts (txt / Markdown) and they are split into chapters automatically; export your work whenever you like — it is never locked in your account.
PC and Mobile
One account, one body of work: drag the three-column layout on your computer, swipe out the outline and read vertically on your phone, and switch to dark mode for late-night writing.
Workflow
Write → Review → Revise, on a Loop
Writing is a craft; review is a sparring match. CoEditor makes that sparring part of your everyday routine.
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01
You Write
Organize chapters and paragraphs in a tree outline; attachments hold the outline, worldview, characters and relations. Every save becomes a new version.
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02
You Review
Point the AI at a paragraph, chapter, full text or any attachment. Style and granularity are always yours to choose.
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03
You Revise
The notes are for you to read. The AI never touches your prose, and never hands you rewritten or polished samples — whether and how to revise is always your call.
Interface
What It Looks Like, and How You Use It
Everything below is recorded from the real interface, not a mock-up. Chapters and attachments on the left, your prose in the middle, the AI editor on the right.
Two Ways to Use
Standalone or Hosted?
Both offer the same writing, reviewing and revising experience. The difference is where your data lives — and who runs the show.
Open and start writing — maintained for you
Hosted · Official Online
The official online edition: open it in your browser and start writing. Service, updates and backups are handled for you.
- No install, no setup — just open and write
- Service, backups and updates maintained for you
- Sign in and keep writing on any device
Best for writers who want a hassle-free, ready-to-use editor.
Open the Hosted VersionYour data stays on your machine
Standalone · Open Source
A desktop app that works out of the box — or deploy it yourself. Your manuscripts and your keys stay yours.
- macOS / Windows / Linux — download and start writing
- Manuscripts and AI keys live only on your machine, never uploaded
- Fully open source (Apache-2.0) — modify and reuse freely
Best for writers who care about privacy and like to stay in control.
Download the Standalone AppOpen Source · Apache-2.0
Your Work, Your Data
The standalone edition is fully open source (Apache-2.0) — download and run it, or deploy it yourself: your manuscripts are stored as plain files with no database dependency, your AI keys stay with you, and the editor can grow with your workflow.
We do not steal your data. We never collect it, resell it, train models on it, or build corpora from it in any form — your manuscripts belong to you alone.