Runs on your Mac·Your keys·Open source

AI teammates you can give real work to.

Otto is an open source Grok Bot alternative that runs on your Mac. Each bot works on its own computer and comes back when the work is done.

Open GitHub downloads
macOS 13.5 or later · Apache 2.0

GitHub repository access required
Your bots
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Clive from AccountingTasksBrainToolsetWork
Prepare the September expense report from these invoices. Totals in EUR, one chart, short PDF.
Clive · 2 checks passed
The report and table are ready. I checked the totals and flagged one duplicate invoice.
September-expenses.xlsx
Summary.pdf
Use invoice dates, not payment dates. Do this every month.
Clive
Saved the date rule to Brain and scheduled this for the 1st of each month at 09:00.
Message Clive…
Every bot has its own computer on your Mac. Open it, take over, or leave it working.
Bots

Give teammate a job. It gets done. Add another!

Each bot keeps its own files, browser and memory. They work in parallel and stay out of each other's way.

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Real work

A chat window with a computer behind it.

The interface is one message in plain words. The ceiling is anything a person can do at a keyboard.

The interface
You type what you would say to a colleague. Nothing to configure.
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Behind it
A real computer. Browser, files, terminal, and its own logins.
It signs in to your tools and uses them the way you do. No API needed, so nothing is out of reach.
app.lexoffice.de · signed in as you
→ 38 invoices downloaded
→ totals cross-checked in Numbers
✓ Summary.pdf saved to ~/Finance
Many at once
Six bots, six computers. No stepping on each other.
Each one gets its own sandbox on your Mac. One bot's mistake stays in one bot's world.
Clive · reconciling invoices
Remy · reading 14 sources
Robin · Monday 09:00
Show it once
A task you explain becomes a routine it repeats.
Say "do this every month" and the method is saved as plain text you can read and edit.
# Monthly close
1. Pull invoices by invoice date
2. Reconcile against charges
3. Chart, PDF, drop in ~/Finance
It asks before it matters
Sending, paying, deleting: your call.
You decide what a bot may do alone and what it must check first. Everything it did is in the work log.
Send the renewal answer to Nora?
SendEdit first
Yours

The computer is yours.

Otto runs on your Mac. You choose the model and connected apps. Model requests go to your provider. You control usage sharing in Settings.

A sandbox per bot
A browser, files and memory nobody else can open.
Every bot works in its own sandbox on your Mac. Clive cannot read Remy's notes.
Browser
Files
Brain
Any model, your key
Eight providers or your ChatGPT plan. The bill is yours to see.
Pick a model per bot. Keys stay in your keychain. Switch any time.
OpenAI
Anthropic
Gemini
Mistral
OpenRouter
DeepSeek
Memory you can read
Open Brain. See where a note came from. Correct it or forget it.
Plain notes, not a black box. Every one links back to the message that taught it.
Use invoice dates, not payment dates.
Clive · learned Sep 3 · from your message
CorrectForget
Get Otto

Give your first
buddy a task.

Sign in to GitHub with repository access. Select the installer for your Mac. This internal build has no Apple notarization.

Open GitHub downloads