Free download · Founding members wanted
AI is writing more of your work. Stet reads every change and tells a typo fix from a changed deadline. Routine edits can land. The rest waits for you.
Download for Mac v0.7.0Local files · Any agent · Nothing to integrate
A pretend terminal. The prompts are real enough.
I'm a Stet markdown document. Run the prompts to see me in action.
AI drafts more of my writing every week. Note to AI · fix the tone It was determined that a mechanism for reviewing these edits would be required. I wanted to see its edits before they became mine.
That is what Stet does. Note to AI · tighten this up The system makes a determination as to which of the changes are significant enough that they ought to be brought to your attention. Stet flags the ones worth your attention.
Your files stay plain markdown on your machine. Stet watches the folder and turns each edit into a proposal with a name on it. Any agent that can write a file can be a co-author.
Review, then let it stand. We open the beta on 2026-08-15. We open the beta on 2026-09-01.
Most tools treat AI like the final draft. The words just appear, unattributed and unreviewed. Stet treats it like a co-author.
Edits arrive as proposals, each with a byline. Accept the good ones. Reject the rest.
Write an instruction right in the doc. Your agent picks it up and the edit comes back for review. A comment thread with your co-author.
Your docs are markdown on your machine. Any AI that can read a file becomes a collaborator. No integration, no API key.
A co-author writes a lot.
Stet can tell a typo fix from a changed deadline. Set what pauses, what flows, and when to step back.
Manual folders hold every change for review. Auto folders let changes land, still marked. Hybrid splits the difference: routine edits land on their own, significant ones wait for your call. Set it folder by folder.
One click still clears the queue. First, Stet shows what you are about to accept, riskiest changes on top: edited numbers, dropped negations, deleted paragraphs. Read until it gets boring, then accept the rest.
See what changed and when. If a change was a mistake, step back to an earlier version and keep the work around it.
Your AI. Your people. One review flow.
Work with any AI on the files you own, then bring coworkers and friends into the same clear process: comment, propose, approve.
The simplest way to share
Invite people directly from Stet. Everyone sees the latest version, while your source stays plain markdown on your machine.
Q3 launch brief
The beta opens to everyone to design partners in September.
The first five partners will shape the onboarding flow.
The editor is free.
Stet Desktop is a free download. Your docs are plain markdown on your machine, so you are never locked in. Stet Sync adds sharing and review with your people.
$0
The whole loop, on real documents.
founding members lock in $5
$10 / month
For writers who share their work.
Custom
Stet for your whole team or company.
"Stet" is the proofreader's mark for "keep this change."
Founding members lock in the Writer plan at $5 a month. Two ways to become one: send two pieces of feedback, on Discord or by email, or share your docs with five people on free Stet Sync.