Private personal AI agent
A personal agent that runs on your own machine and never sends your life to anyone.
OpenOne is an open-source assistant that indexes your email, files, calendar and notes on your own hardware. When a task needs an outside service, it asks first and shows exactly what would be sent.
No account. No card. No sales call.
The problem
Personal AI assistants require sending everything, emails, documents, calendars, notes, to a company's servers.
For a large group of people that is either professionally prohibited or personally unacceptable, so they get no assistance at all.
The local alternatives are technically demanding, slow, and lack the integrations that make an assistant useful.
Who it is for
Professionals with confidentiality duties
Lawyers, therapists, doctors, journalists and researchers for whom sending client material to an outside service is professionally prohibited.
Privacy-conscious people and developers
People who find it unacceptable to send their emails, documents, calendar and notes to a company's servers.
Restricted jurisdictions
Anyone working where sending client data to a foreign service is not permitted.
What does your AI assistant send off your machine?
Answer thirteen questions about the AI assistant you use or are considering: what leaves your machine, client material, what you can verify and what you control. See where your data is most exposed. Runs in your browser. No account, no card, no call.
Method: yes scores a question in full, partly scores half and no scores nothing. Each is weighted from one to three by how directly a no could send your data somewhere you cannot see, and the score is the weighted share out of a hundred. Unanswered questions are left out.
An assistant that keeps your life on your machine
A personal agent that indexes your email, files, calendar and notes locally and works across all of it, with nothing leaving the machine.
Local open-weight models
It runs open-weight models on your own hardware, not on a company's servers.
Your data indexed locally
Email, files, calendar and notes are indexed on your machine.
Questions and tasks across it all
Ask questions and have it perform tasks across everything it has indexed, with nothing leaving the machine.
Nothing sent without asking
When a task genuinely needs an external service, it says so explicitly, asks, and shows exactly what would be sent.
Honest hardware requirements
Requirements are stated honestly rather than optimistically, and it falls back gracefully to smaller models on modest machines.
Open source, so it can be checked
The code is fully open source, and anyone who watches the network can verify that nothing leaves the machine.
Pricing
Free and open source, permanently. Pay only for encrypted sync between your devices, or for firm-wide deployment and support.
Open source
The full local agent on your own machine.
- Open-weight models on your hardware
- Local indexing of email, files, calendar and notes
- One-click installer
Sync
Encrypted sync between your own devices.
- The sync server cannot read anything
Professional firms
For firms deploying it across their people.
- Deployment tooling
- Policy controls
- Support
Regulated organisations
Support contracts for regulated organisations.
- Paid support contract
Prices in USD. The firm price is charged per seat.
How it works
OpenOne, from the first step to the result.
- 01
Install it
A one-click installer for the common platforms.
- 02
Let it index locally
Email, files, calendar and notes, on your own machine.
- 03
Ask and delegate
Questions and tasks across all of it, handled by a local model.
- 04
Approve anything external
If a task needs an outside service, you see exactly what would be sent before anything goes.
Questions people actually ask
Does any of my data leave my machine?
Not without your approval. Where a task genuinely requires an external service, OpenOne says so explicitly, asks, and shows exactly what would be sent.
How can I check the privacy claim?
OpenOne is fully open source, and anyone who watches the network can verify that nothing leaves the machine.
Will it run on my computer?
Hardware requirements are stated honestly rather than optimistically, and it degrades gracefully to smaller models on modest machines.
What can it work with?
It indexes your email, files, calendar and notes locally, then answers questions and performs tasks across all of them.
What does it cost?
OpenOne is free and open source, permanently. Optional encrypted sync between your own devices is 6 dollars a month.
Can the sync server read my data?
No. Sync is encrypted, and the sync server cannot read anything.
Is there a version for firms?
Yes. Professional firms can add deployment tooling, policy controls and support at 39 dollars per seat. Regulated organisations can also take a paid support contract.
Why should I trust the AI assistant privacy check?
The score comes from your answers, worked out in your browser. It does not inspect your software or your network. It is not legal advice: whether client material may leave your machine is for your firm or professional body to confirm.
What does your AI assistant send off your machine?
Answer thirteen questions about the AI assistant you use or are considering: what leaves your machine, client material, what you can verify and what you control. See where your data is most exposed. Runs in your browser. No account, no card, no call.
Open the free toolIt runs in your browser. OpenOne never sees your inputs.