MantleOS Desktop.

1. 01

   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.

2. 02

   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.

3. 03

   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.

4. 04

   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.