Notus is a notebook app with an infinite canvas, structured diagramming, optional connectors, and powerful agentic capabilities — built to keep your work private, fluid, and under your control.
Familiar notebook organization meets an open canvas — so you can capture ideas, structure systems, and keep everything close to where you work.
Sections, pages, and hierarchical organization you already know — designed for long-lived personal and team knowledge bases.
Pan and zoom across an open surface. Drop notes, sketches, and diagrams anywhere — no fixed page bounds holding you back.
Build architecture maps, process flows, and concept diagrams with first-class shapes and connections — not just freehand scribbles.
Your notebooks live on your machine first. Sync and cloud features stay optional — ideal for sensitive work and offline-first workflows.
Keep Notus local when you want. When you need context from the systems you already use — from your inbox to the plant floor — optional connectors bring it onto the canvas, live.
Connectors are opt-in and unlock with a Notus Annual license — enable only what you need for each notebook. I3X and MQTT read industrial systems; they never write to them.
Drop an agent onto any page. It sees the blocks around it — text, images, diagrams, terminals and live data — and works with them, using the AI provider you choose.
Agents read and rewrite text, describe images and screenshots, draw and update diagrams, and run commands in terminal blocks — including tmux panes and SSH sessions on other machines.
With connectors on, an agent browses an I3X plant model, reads MQTT topics, runs SQL (asking before it changes data), drafts from email threads and checks your calendar.
Open a Coding Session on a repo and Claude Code runs there, on your own Claude plan. While it works in your code it can read your notebook, update your plan and to-dos, and draw flow diagrams of what it built — and every change to the canvas is one Undo away.
An agent you trust can set things up end to end: add connections and components, even a Coding Session, then use them in the same request. Off until you switch it on.
Whether you are mapping industrial architectures, planning a product, or keeping a personal knowledge base, Notus keeps freeform capture and structured reasoning on the same surface.
Connectors and agents unlock with a Notus Annual license. Agents are bring-your-own-key: connect Anthropic (Claude), OpenAI, OpenRouter or SpaceXAI (Grok), and your AI provider bills you directly. Coding Sessions run on your own Claude plan or API key.
The free download is the complete manual notebook — no account, no trial clock, no connection to a license server at all. Notus Annual unlocks connectors and the AI agent when you're ready for them.
Also available for Windows, Mac (Apple Silicon), Mac (Intel), and Linux.
Windows: the installer isn't code-signed yet, so Windows SmartScreen will show a warning — choose More info, then Run anyway. On Windows 11, Smart App Control can block the install with no option to override it. A signed installer is pending Azure Developer approval.
New to Notus? After installing, open Help → Documentation → Getting started in the app. It works offline.
By downloading or purchasing, you agree to our Terms, Privacy Policy, and the Notus End User License Agreement.
Questions, bug reports or ideas? Visit the Notus community on GitHub.