Polished tools.
One memory.
Jackdaw puts the everyday tools in one app: chat, mail, calendar, tasks, notes, a journal, pages, tables, files, drawings, formulas, contacts and small apps you build. Use it at home, or across a whole company.
Behind it sits Mantle, a brain that remembers everything you put in. Ask it anything, and the answer comes from your own material.
A farm, a refinery, a church office: most work runs on these same tools, so Jackdaw fits almost any trade.
Jackdaw is the app. Mantle is the brain. The demo is the real app on a sample brain we filled in for you. Nothing to install.
What people do with it.
Fourteen short stories, from a farm gate to a refinery. Every one works in the app today.
An inspection team that sees failures coming
An inspection team at a refinery logs wall-thickness readings into a Table, one row per point on each line. A formula column turns each reading and its corrosion rate into a predicted failure date. The rate calculation lives in Formulas, with its units, so anyone can check each step. The plant drawings go into Files, and the brain reads them too. Ask which lines fail first this year, and the answer comes from the team's own readings and drawings.
Everything you keep,
in one window.
Read the morning’s mail. Ask what the day holds. Draft a page, fill in a table, drop in a file. End the day with a line in the journal. One window, one search, one memory behind all of it.
You stop hunting for the thing you know you saved.
- Chat
- Notes
- Journal
- Pages
- Tables
- Formulas
- Files
- Tasks
- Calendar
- Contacts
- Drawings
- Apps
The parts, up close.
Every pane is a real tool, not a text box with a name on it. Here are four worth a closer look, then the rest.
- Pages
- Long documents with callouts, columns, tables, checklists, code, maths and diagrams. You write in a private draft and commit it when it is ready. Only then does the brain read it.
- Tables
- Workbooks with tabs, typed columns, formula columns and links between tabs. Ask a question and the assistant queries the table directly, so ten thousand rows are as easy to ask about as ten.
- Formulas
- Save a calculation once, with its branches, lookup tables and units. Every result shows how it got there, step by step. A missing input stops it with an error, never a quiet zero.
- Apps
- Describe a tool you need. The assistant writes it, builds it, fixes its own mistakes and shows you a live preview. Each app keeps its own data and runs walled off from the rest.
and 25 more
- Notes
- Quick capture in markdown. Each note is summarised and mined for facts when you save it.
- Journal
- Who you are, what you are working on, what you prefer and where you are headed. Every agent reads it before it answers.
- Tasks
- Status, priority and due date. The assistant can manage them too.
- Calendar
- Start, end, place and repeats. Reminders reach you on Telegram or in the phone app.
- Contacts
- The gate for mail, both ways: whose mail gets read in, and who the assistant may write to.
- Drawings
- A hand-drawn style whiteboard for sketches and diagrams. Export to SVG or PDF.
- Access levels
- Every folder has one of four: Admin, Team, Client or Public. Staff, clients and the public each see their own part.
- Recall maps
- Write down how your work is done, one card per rule. Agents read the map before they act.
- API keys
- Give a script or an MCP tool its own key: read only or read and write, for the areas you pick, with an expiry.
- Secrets
- A sealed vault. Titles and tags are searchable. The values stay sealed, and no model can read one back.
- Formatted replies
- Answers come back as documents, with headings, tables, checklists and diagrams. Save any reply as a page.
- Voice and attachments
- Speak into the composer, or attach images, PDFs, documents and spreadsheets to a question.
- Careful edits
- The assistant can rewrite one paragraph of a page and leave the rest alone.
- Review changes
- See exactly what a commit will publish, block by block, and undo any part of it.
- Sub-pages
- Ask the assistant to split a long page at its headings into child pages.
- Mentions
- Mention a person or a document with @ and it becomes a real link, with backlinks.
- Markdown in and out
- Switch a page to plain markdown and back. Paste markdown, even a Notion export, and it becomes real blocks.
- Export
- Pages and notes to Word, PDF or markdown. Tables to Excel with a totals row, or CSV.
- Search
- Press Command-K to search the whole brain and jump anywhere.
- Links to anything
- Every item has its own link, and it opens on the screen that shows it.
- Live screens
- New mail or a new file shows up the moment it lands. No refresh.
- Desktop app
- Linux, macOS and Windows, with notifications and deep links. Keep several brains, each in its own window.
- Phone app
- Talk to the assistant, dictate a journal entry, send in photos and files, and get your reminders. Admin logins for now.
- Themes
- Forty-three palettes, light and dark, every pair contrast-checked before it ships.
- The guide inside
- Switch on the user guide and the brain reads it too, so the assistant can explain the app and show where it read it.
Ask the way you would ask a person.
Everything that arrives gets read. Mail, notes, files, the lot. Not sorted into folders, read. So a plain question months later gets a plain answer, and it shows you what it read to get there.
It connects things too. Ask who somebody is and it can tell you where they turn up, what is true about them now, and what used to be.
You can watch it work, too: what it searched, what it read, then the answer as it writes. If it heads the wrong way, stop it.
Example
“What did we settle on for the gantry rebuild?”
Linear rails, decided on 20 March after the belt test failed. You capped the parts budget at four hundred.
Read
- NoteGantry rebuild
- MailRe: rails, 20 Mar
- Filerail-spec.pdf
It keeps working when you close the tab.
Jackdaw is the window. The brain behind it does not stop when you shut it.
- Mail from someone in your contacts is read, summarised and filed before you see it. Mail from anyone else stays where it landed.
- Reminders
- An event in your calendar reaches you on Telegram or in the phone app, at the time you asked for, with nothing open.
- Errands
- Ask for a piece of research before bed. By morning it is in your inbox, sent from your own address, with its sources.
You do not have to remember to ask.
Yours, in the boring literal sense.
The brain runs on your own machine, or on your company’s server. Jackdaw itself keeps nothing. It has no database and no secrets of its own, and it talks to your brain and nothing else.
Every key and password stays sealed on your box. There is no account with us, no tracking, and no third-party script on the page you are reading either.
Some things do leave: the requests that go to the AI providers you picked, for chat, voice, images and search. You choose each one, and chat and search can run on a model of your own.
There is a brain behind this.
Mantle is the part that remembers. It reads what you keep, links the people, places and dates in it, and runs the agents that work for you. It has a site of its own, with all the detail.
Get it.
Jackdaw opens a brain, so start there. Run one, then open it in the browser, the desktop app or on your phone. Or try the demo first.
- Run the brain
- One command on a Linux machine with Docker. It starts Mantle and the Jackdaw web app together. Install Mantle
- Desktop app
- Linux, macOS and Windows, pointed at a brain you already run. The macOS build is signed and notarized, and it updates by itself. Download from GitHub
- iPhone
- On the App Store, free. Want new builds first? The open beta runs on TestFlight. Get it on the App Store, or join the beta
- Android
- A closed test on Google Play for now. Join the group, then sign up as a tester with the same Google account. Two weeks of testers is what opens the store to everyone. Join the testers group, then become a tester
- Demo
- The real app on a read-only brain we filled in for you. Nothing to install. On a phone, give the app this address and sign in with any name and password. Try the demo