OxOnOS  ·  the operating system inside the Ox1  ·  Oxford, England

Power it on.
Your AI is there.

OxOnOS is the part of an Ox1 that took the years. It runs the AI on the machine in front of you, keeps your knowledge on it, and tells you — every time you look — where your thinking actually happened. What it sits on is our business.

The OxOnOS emblem: the OxOn symbol in its approved vertical orientation.
Nine screens No terminal. Ever. It ships on the Ox1, and only on the Ox1
The whole of it Pick one  ·  nine screens, in the order you meet them

Nine screens,
and no tenth one in a drawer.

This is the whole operating system. Not the highlights, not a tour of the good bits — the entire list of places an owner can be. Everything an Ox1 does, it does from one of these.

The OxOnOS Home screen. The heading reads Everything is ready, and under it a line saying all ten checks that could run passed, and that one check needs an internet service this computer does not use, which is fine. A panel names the machine and reports its processor and graphics temperature as Not checked. Six tiles: the AI engine answering, an Intelligence Fleet of three machines, storage, forty-two files indexed, a privacy tile reading Can reach out, and an updates tile.

Home

“Everything is ready.”

Checked, not assumed

The first thing the machine says — and it only says it after the checks have actually run. Ten of them passed. One needs an internet service this computer does not use, and rather than quietly counting that as a pass, the screen says so in the second line.

Two readings on this machine are marked Not checked. That is not a fault. It is the rule the whole operating system is built on, showing its working.

The OxOnGPT screen: a list of saved conversations on the left, and on the right a question about three supplier quotes answered with a short verdict, a table of suppliers, delivery and price, and three numbered recommendations. Under the box where you type it says: processed on this computer, works offline.

OxOnGPT

A conversation with your own machine.

On this box

Ask it anything, in words. The answer is composed on this computer and nothing you type leaves the box. Conversations are kept here, named, and deleted by you — there is no copy of them anywhere else, including with us.

Open it on the machine’s own screen, or from any browser on your network. Nothing to install on the laptop; it is already on the network you are standing in.

The AI screen. Three cards headed Everyday AI, Reasoning AI and Coding AI, each with a plain description and a collapsed link reading Technical details for engineers. Below, four readings: the engine serving locally, which AI is in use, what the AI may read, and a tile reading Requests sent out: 0.

AI

Three ways of thinking, chosen in words.

Chosen in words

Everyday for the day’s work. Reasoning for the question that deserves a longer think. Coding for software. You pick a kind of thinking, not a filename — and switching is a click, because it is all on the machine already.

A model’s name is available to anybody who opens Technical details (for engineers). Nobody else has to see one. The reading to look at on this screen is the last tile: requests sent out, 0. Counted, not promised.

The Kits screen. One Kit is installed, the Studio Kit, described as an agent team of twenty-four named specialists who plan, review and build. Three readings beneath it: the team, where it thinks, and what it has done here. Where it thinks reads Not on this box. Below, a list of four jobs the owner has given it.

Kits

Give it a job in your own words.

Delegated

A Kit is a set of abilities added to the box. You hand it a job the way you would hand it to a person — read the three supplier quotes and tell me which to accept, with the reason — and it works here and leaves you the files and the argument.

Read the middle reading: where it thinks. On this machine, that Kit’s last job went out to a service on the owner’s own account, and the screen says so in as many words. An operating system that only tells you the flattering half is not reporting, it is marketing.

The Apps screen. Two cards for parts of OxOnOS itself, OxOnGPT and OxOnTV. Below, four apps installed on the box: DrawString, OxOn Films, Peepr and Timber Desk. Three offer an Open button; DrawString is greyed and says it is installed but not answering, and that nothing was changed — this is what the box found when it looked.

Apps

Software that runs on the box.

Reaches nothing

Opened without leaving OxOnOS, and — this is the part that matters — the apps are not allowed to ask the box for anything. No key, no account, no knowledge that an API exists. Which is why one of them answered a forest owner’s question on his own land, on a day with no signal at all.

And look at the greyed card. The box probed each app before offering it, one did not answer, and the screen says so: nothing was changed — this is what the box found when it looked.

The Files screen. Three readings: documents indexed, files seen, and when the last folder was added. A search box for a word from inside a document, a list of the folders shared with the AI, and an upload panel saying the file goes into your shared folder on this computer and nowhere else.

Files

It reads what you hand it, and nothing else.

Read in place

Nominate a folder and the machine can answer questions out of it. Text, Markdown, and PDFs with real text in them. A scanned PDF it cannot read is listed as skipped rather than quietly dropped — because a document you think was read and was not is worse than one you know was missed.

Nothing is uploaded anywhere. The file goes into a folder on this computer, and the screen says so on the panel you drop it into.

The Activity screen: a dated list of what happened on the machine, each line tagged with one of three authors — you, your AI, or the system. One line records that a routine check found the AI engine slow to respond and that it recovered on its own.

Activity

Everything you and your AI have done.

On the record

Newest first, and every line has one of three authors: you, your AI, or the system. You can read just one of them.

Including the unflattering lines. “A routine check found the AI engine slow to respond. It recovered on its own.” Nobody has to be told that. A machine that only logs its good days is not keeping a record, it is keeping up appearances.

The Help screen, headed How to use this computer. A diagram shows a laptop, a phone and a television reaching an Ox1 inside the home or office, with the internet outside a dashed line labelled OxOnOS never sends your work here by itself. Below, three numbered steps for getting on from your own device: get a code, open an address, and it proves itself.

Help

The manual is a screen, and it is about this machine.

This machine

Not a help site, not a PDF for a product family — the addresses on it are this box’s addresses, and you can print it from the machine it describes.

One sentence on it is the acceptance test for the whole product, written where the owner can hold us to it: “If you are ever handed a command to type, that is a fault in this product and not something you did wrong.”

The System screen. Under This computer, fields for what the computer is called and who it belongs to, with a note that the owner name is a label and nothing outside your own machines is told about it. Under Privacy, three rows: AI processing, verified, local only; Reaching out, which reads Can reach out; and a row headed This is measured, not printed.

System

Defaults are private. You loosen them, never the other way round.

Private by default

What the computer is called, who it belongs to, who may use it, what it may reach, and four ways back: restart, repair the AI, reset, factory reset. If it cannot start properly it is built to show a page that says what failed and what to do — a page designed to work when nothing else does.

The third row under Privacy is the one this entire page is named after, and you can read it in the picture.

Every picture above is a render of the build these machines are running, taken through the operating system’s own harness rather than drawn for this page. Figures we have not agreed to publish — speeds, timings, temperatures — were taken out rather than guessed at, which is why two readings on the Home screen say Not checked.

01
What it is

What it sits on is our business.
What it does for you is the product.

Underneath is plumbing, and plumbing is swappable. What you are buying is the layer above it — the one that decides what your machine knows, what it will do for you, and what it refuses to let out. Anybody can screw a graphics card into a case.

Engines are replaceable.

OxOnOS asks for a capability and never for a particular AI engine. The engine of the day is an implementation detail, and on the day a better one exists you do not buy a new computer — which is the opposite of how this industry has been selling to you.

Models are replaceable.

An application asks for a kind of thinking, never for a filename. So the model is the disposable part and your knowledge is the part you keep. Today that is the wrong way round everywhere else, and it is what holds you where you are.

You are not.

The machine is bound to you, by you, with a code you read off its own screen — and a key you keep in case you lose the device you read it on. There is no account with us. We could not reach your machine if you asked us to.

A graphics card cannot keep a promise.
An operating system can.

02
The thesis

Measured, not printed.

Those three words are not ours. They are the heading of a row on the machine’s own System screen, and underneath them the operating system explains itself better than any of this does.

“This is measured, not printed. OxOnOS derives this from where your AI actually ran and whether any request left the machine — every single time you look.”

OxOnOS  ·  System  ›  Privacy

Every computer you own has a settings page that asserts something about your privacy. This one derives it. The difference sounds like pedantry until the day the assertion is wrong and nothing on the machine is in a position to notice.

AI processingLocal only

Verified

“Your AI answered from this computer. No data left the machine during the last request.”

Reaching outCan reach out

Allowed

“OxOnOS itself is allowed to reach the internet, so it can use services you have connected — like a television subscription.”

Requests sent outCounted

0

Not a setting, and not a promise. A number, derived from what actually left the machine, and recomputed the moment you open the screen.

The thing most people get wrong about it

It is not an offline computer,
and it will tell you so itself.

Pull the network lead out of the back and your AI carries on — that is the machine, and it is the demonstration we are proudest of. But OxOnOS is allowed out, because a television subscription, an update you asked for, and the time of day all live out there.

So the claim is not that nothing ever leaves. Anybody can make that claim and almost nobody can keep it. The claim is that the machine counts what left, shows you the number, and derives it from what happened rather than from a box somebody ticked. When the honest answer is can reach out, the screen says can reach out — in amber, on the Home screen, where the owner will see it without going looking.

Go on, then Ask it whether it is up to date

Every other computer you own answers this instantly.

It answers instantly because it asked a server, and the server told it. That is the only way a machine can know — which means every one of those reassuring “you’re up to date” ticks is a thing your computer phoned somebody to find out, on a schedule you did not set.

This one has not phoned anybody. So watch what it does with the question.

There is one sentence this operating system is not allowed to print, anywhere, ever: “up to date”. It does not ask the internet, and a computer of yours that answered an hour ago told you only what it said it was running. Neither is grounds for the claim, so the claim is not made. That rule is in the repository, not in a style guide.

03
The work

Five things it does
that a folder of files cannot.

The screens above are the shape. This is the part you would actually be doing on a Tuesday.

01

Ask it, and the answer is written here.

Not routed here, not cached here — composed on this machine, out of a model that is sitting on this machine’s graphics card. On the day your network is down, that is the difference between a quiet morning and no morning.

Location
02

Hand it a folder and ask about what is in it.

Your contracts, your notes, the three supplier quotes. The documents do not go anywhere to be read; the reading happens where they already are. And the machine lists what it could not read, which is the half everybody else leaves out.

Your files
03

Give it a job, and read the argument it hands back.

This is the one to look at. Asked to draft from four of its own documents, the machine came back in one pass and said there were seventeen statements in its own draft it could not stand behind — each one marked in the document, each one explained at the foot of it. We did not teach it modesty. We taught it to say which parts it is guessing, because that is the whole difference between a tool you can use at work and a tool that is confidently wrong in front of a client.

Judgement
04

Describe an app in plain English, and the box builds it.

Working software, written by your own machine, running on your own machine, for the one job nobody sells software for. A forest owner wanted to know whether to fell this year or wait twelve months. He now has a screen that answers it with his own prices.

Software
05

Open it standing in a wood with no signal.

The apps on the box are forbidden from asking the box for anything — no key, no token, no knowledge that an interface exists. It reads like a restriction. It is the reason an app answered its owner on a farm track on a day with no reception at all, and it is enforced in the product rather than promised in a document.

Anywhere
04
More than one

An Intelligence Fleet,
with nothing in the middle of it.

Add a machine and the fleet grows. That is the whole mechanism. Every Ox1 is a complete computer on its own; two or twenty of them introduce each other by hand, on your own network, with a code a person reads off one screen and types into another. No directory of your machines exists anywhere. Not here, not with anybody.

The Intelligence Fleet screen. Three computers are drawn as cards — this one, and two others named Reception and Workshop — joined by links. One link is a solid green curve marked answered; the other is a dotted amber curve labelled not checked, leading to a card that says this computer does not know where that one is, so it has not asked. A legend underneath gives four link states: answered just now, no answer, not checked, and refused.
OxOnOS  ·  Intelligence Fleet One answered  ·  one was never asked, and the screen says which

We left that picture exactly as the machine drew it. One computer answered. The other was never asked — this one does not know where it is at the moment, so it did not guess, and the card says so in those words. Look at what it refuses to tell you about that machine: not checked — nothing here knows what it holds. Not “nothing”, and not a stale number from last week. A diagram with three green links would have been easy to arrange and would have taught you nothing at all about this operating system.

  • Counts cross. Names do not. One machine can be told another is holding forty documents. It is never told what they are calledPrivacy
  • They ask. They never assume. A box that notices another box on your network asks you to introduce themConsent
  • “Who it belongs to” is a label, not a membership — a word on your own machines, and nothing outside them is told about itYours
  • Unbind and nothing breaks — carry one to another office and it is a whole working machine againYours
05
Whose machine it is

No accounts. No passwords.
A code, and a key you keep.

There is nothing to sign up to. A person joins this computer by typing a six-character code shown on its own screen, once per device, and the code lasts ten minutes. Then the machine hands them a key to keep, in case they lose the thing they typed it on.

The People screen: the people who may use this computer and the devices each of them has joined, with a control for marking someone as a child.
OxOnOS  ·  System  ›  People Kept out of the rail on purpose — a machine with one person on it is complete
  • A person, not a login — people and their devices, on this machine, in a list you can readPeople
  • Introduced once — a code off the machine’s own screen, ten minutes, one deviceAccess
  • It proves itself — the moment a device joins, the box does a real piece of work and shows the answer, so you know it works before you rely on itProof
  • A child is a person here — mark someone as a child and what the machine offers them changesHousehold
  • A way back that does not involve us — a recovery key you hold, and four routes home on the System screen when something has gone wrongRecovery

No accounts. No passwords.
A code, and a key you keep.

The rules it is built to Written 30 August 2026, before any of it existed

Eight sentences,
and they settle arguments.

These are not from a brochure. They are in the repository, they are dated, and they are what gets cited when a decision about a feature has to go one way or the other. We are putting them on a public page because a rule you will not show anybody is not a rule, it is a preference.

  • The user owns their data.04
  • Local means genuinely local.05
  • No green status without a successful check.06
  • No task requires a command line.07
  • A failed update must not strand the machine, and the owner must always have a recovery route.08

Rule 06 is the one you can see from here. It is why two readings on the Home screen say Not checked instead of going green, why the Fleet screen leaves a machine amber rather than guessing, and why this operating system will not tell you it is up to date. On most equipment, a check that never ran is shown in green.

Where it runs

Native to the Ox1.
Not welded to it.

OxOnOS and the Ox1 were designed together. Nothing in it is adapted, ported, or wrapped around somebody else’s idea of a computer — which is what native means, and it is why you switch an Ox1 on rather than set one up.

The machine

It arrives as an Ox1.

An aluminium tower with a handle, built to order in Oxford, bought once and owned outright. The operating system is the part that took the years. The box is what we put it in, and the two were drawn at the same desk.

Native

Not an install. A machine.

You do not put OxOnOS on an Ox1 any more than you put the engine in a car at the dealership. It is switched on, not set up — and that is the difference between an appliance and a computer somebody has to look after.

The door

Builders, talk to us.

It was never written for one piece of hardware. If you build your own machines and you want an operating system that keeps the intelligence on them, we would like to hear from you. That is a conversation, not a waiting list.

See the Ox1 →

Nobody is counted.
Not by the licence, and not by us.