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Notus
by 4.0 Solutions

Your local-first notebook for thinking at scale

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.

Local-first by default
Infinite canvas
Agentic workflows

Notebooks that think with you

Familiar notebook organization meets an open canvas — so you can capture ideas, structure systems, and keep everything close to where you work.

Structured notebooks

Sections, pages, and hierarchical organization you already know — designed for long-lived personal and team knowledge bases.

Infinite canvas

Pan and zoom across an open surface. Drop notes, sketches, and diagrams anywhere — no fixed page bounds holding you back.

Structured diagramming

Build architecture maps, process flows, and concept diagrams with first-class shapes and connections — not just freehand scribbles.

Local-first privacy

Your notebooks live on your machine first. Sync and cloud features stay optional — ideal for sensitive work and offline-first workflows.

Optional bridges to your stack

Keep Notus local when you want. When you need context from the tools you already use, optional connectors bring it onto the canvas.

Email
Calendar
Slack
Databases
MQTT

Connectors are opt-in — enable only what you need for each notebook.

Agents that work inside your notebook

Notus includes powerful agentic capabilities so the canvas is not just a place to write — it is a place to draft, restructure, and act.

  • Draft & rewrite in context

    Generate outlines, expand notes, and refine wording without leaving the page you are editing.

  • Structure messy thoughts

    Turn freeform dumps into sections, action lists, and diagram-ready building blocks.

  • Act through connectors

    With connectors enabled, agents can pull calendar context, draft from email threads, or ground answers in live data.

Built for people who think in systems

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.

  • Stay offline when you need to
  • Bring tools in only when useful
  • Shape the product during beta

The beta is open to everyone

Notus is out of closed beta — no invite code, no waiting list. Sign up and we will send you the current build plus everything you need to file issues and follow releases.

  • New builds as features land
  • Report bugs and track fixes on GitHub
  • Influence roadmap for canvas, connectors, and agents

Join the Notus Open Beta

Free to join, no purchase required. We will email you the beta build and release notes.

So we can add you to the beta discussions and issue tracker.

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