Board-aware AI
Reads first. Acts second.
The agent reads your whole board before it acts, then searches, runs code, and writes results back as editable nodes.
Your canvas thinks back. Together. The open-source, real-time collaborative AI canvas with notes, mini-apps, and agents on one infinite board.
Notes, mini-apps, and agents on one infinite board. The AI reads your board before it acts.
Open-source, real-time collaborative. Solo or with your team.
AI mini-apps·Real-time collab·Open source·8 AI models
Watch the tourA real Dim0 board · everything on one canvas
Rendered with canvas-harness, our open-source canvas engine.
The problem
One idea, five tabs.
Browse, note, sketch, ask AI, paste back. By the time you move forward, your thinking is spread across tools that never talk to each other. Dim0 is all three on one canvas, and the agent reads the whole board before it acts.
Notion
Rich notes
but no canvas
Excalidraw
Infinite canvas
but no notes or AI
ChatGPT
AI answers
but no spatial workspace
Dim0
All three on one surface: notes, an infinite canvas, and a board-aware agent. Nothing to copy-paste between, nothing that loses your context.
What you can do
One board. Everything on it.
Most tools bolt AI onto a doc. Dim0 is built the other way around, so the canvas is the interface and every kind of node lives on it.
Mini-apps
Spin up a little app on the canvas.
Describe a calculator, chart, or quiz and Dim0 drops a real, interactive React app on your board, next to the notes.
Nested boards
A canvas that folds into folders.
Group anything into a nested board and open it like a folder. Big projects stay organized. Zoom out, dive in.
Presentation mode
Present straight from the board.
Drop frames around your work and Dim0 turns them into slides. Present from the same canvas you thought on. No export, no rebuilding.
Rich notes
Notion-grade notes, drawn on the canvas.
Tags, math, toggles, sub-pages, code, sitting wherever you put them. Edit by hand, or ask AI to draft and revise in place.
Mapify
Notes become structure.
Turn any notes into mind maps, schemas, or diagrams in one gesture.
Every node type
One canvas, every kind of node.
Code, widgets, math, images, hand-drawn shapes, docs, and nested folders, all first-class nodes the AI can read.
Infinite canvas
Thinking, laid out in space.
Notes, code, math, and shapes on one endless surface. Pan and zoom, never lose the view.
Collaboration
Now multiplayer.
Bring your team onto the same board. Real-time cursors, shared agents, edits that sync without merge conflicts. The canvas works the same for one person or fifty. It's the open-source Miro alternative you can actually run yourself.
Live cursors & presence
See who's on the board, what they're selecting, where they're looking. Names, avatars, colors. The room feels alive.
Shared agents
One person prompts, everyone watches the agent build, anyone refines. The board-aware AI works for the room, not just the prompter.
No merge conflicts
Two people can edit the same note or shape at the same time. Operational transforms with last-write-wins, the same approach Figma and Excalidraw use. No refresh dance, no "reload to see changes".
Convinced? Start on the canvas.Free to start · nothing to set up · your data stays yours
Start free Themes
Eight themes. Light and dark.
Parchment, Matcha, Noir, Catppuccin, Tokyo Night, Gruvbox, Monokai Pro, Rosé Pine. Pick the one that makes you want to open the app.
Models
Your model. Your choice.
Bring whichever you trust. Switch as the landscape shifts. The workflow stays the same.
Claude·AnthropicGPT·OpenAIGemini·GoogleMistral·MistralDeepSeek·DeepSeekQwen·AlibabaKimi·MoonshotGLM·Z.aiClaude·AnthropicGPT·OpenAIGemini·GoogleMistral·MistralDeepSeek·DeepSeekQwen·AlibabaKimi·MoonshotGLM·Z.ai
Open source · Private · MIT
Yours. And it stays yours.
The codebase is public and self-hostable, and the cloud respects you the same way. Encrypted, never trained on, no behavioral telemetry. Walk away anytime with everything you made.
Encrypted, always
TLS on the wire, at-rest encryption on the database and uploads. No plaintext on the network, none on disk.
Never trained on
Your boards aren't training data. Prompts go only to the provider you pick, for the request you sent, and no telemetry watches your canvas.
Run it yourself
MIT-licensed and self-hostable. Local Postgres, local vector DB, your own model keys, nothing leaves your infrastructure.
Take it with you
Notes are pure Markdown, boards export cleanly. No proprietary format, no lock-in. Walk away anytime with everything.
What Dim0 will never do
- Train on your content
- Sell your data
- Profile you for ads
- Run session replay on your canvas
- Lock your boards in
Loved by early users
What people are saying.
Placing agent output directly on the board as nodes instead of a chat sidebar is the detail that sells this. Spatial context survives, chat history doesn't.
The spatial design of this canvas is really elegant. Being able to place AI outputs directly as nodes instead of chat history is a clever insight.
I am a poweruser of Miro and must say very well done :-)!
Great idea, definitely something missing in the market.
Great design and ease to use, collaboration makes it more productive.
Great product!
Good for visualising.
Placing agent output directly on the board as nodes instead of a chat sidebar is the detail that sells this. Spatial context survives, chat history doesn't.
The spatial design of this canvas is really elegant. Being able to place AI outputs directly as nodes instead of chat history is a clever insight.
I am a poweruser of Miro and must say very well done :-)!
Great idea, definitely something missing in the market.
Great design and ease to use, collaboration makes it more productive.
Great product!
Good for visualising.
The “everything on one canvas” angle is compelling, and making the AI write directly as nodes feels native rather than bolted on. Open source is a good trust signal.
The interface is beautiful and elegant. The canvas-based approach makes the tools truly useful.
I like the idea, the multiplayer and the design!
This tool is very nice.
Brilliant work right here, keep it up.
Very good overall.
The “everything on one canvas” angle is compelling, and making the AI write directly as nodes feels native rather than bolted on. Open source is a good trust signal.
The interface is beautiful and elegant. The canvas-based approach makes the tools truly useful.
I like the idea, the multiplayer and the design!
This tool is very nice.
Brilliant work right here, keep it up.
Very good overall.
Pricing
Start free. Upgrade if you love it.
Run it yourself for free, or use the cloud with nothing to set up. No card required to start, and you can upgrade any time from your account.
Miro, Notion, and ChatGPT on one canvas, from €6.99 a month. Plus still costs less than a single ChatGPT Plus seat.
Free
For personal exploration
€0forever
- 50 AI requests / day
- 750 AI requests / month
- 5 boards
- Up to 5 collaborators / board
- 3 documents / board
- 10 mini-apps / board
- Lite models only
- Community support
Free is limited while we run on a small budget. We’re making it more usable over time.
Basic
For steady, everyday use
€6.99/ month
≈ one every 2 weeks
- 150 AI requests / day
- 3,000 AI requests / month
- Unlimited boards
- Up to 10 collaborators / board
- 10 documents / board
- 20 mini-apps / board
- Lite models (no top-tier AI)
- Standard support
Most popular
Plus
For active daily workflows
€11.99/ month
≈ one a week
- Unlimited AI requests
- Unlimited boards
- Up to 20 collaborators / board
- 25 documents / board
- 100 mini-apps / board
- Frontier models: GPT, Claude, Gemini, and more
- Priority support
Upgrade any time from your account. No card needed to start.
Self-host
Run it yourself, own everything
FreeMIT licensed
- Full source on GitHub
- Your infrastructure, your data
- Bring your own model keys
- Unlimited collaborators
- No caps, no lock-in
FAQ
Questions, short answers.
A thinking canvas where notes, docs, code, widgets, and AI agents live on one board together. Rich notes like Notion, freehand shapes like Excalidraw, agents that act on the board, all on the same surface.
Yes. Dim0 is a Notion alternative and an Excalidraw alternative on one canvas, with a board-aware AI agent on top. Notion has rich notes but no canvas. Excalidraw has a canvas but no notes or AI. ChatGPT Canvas has AI but no spatial workspace. Dim0 has all three on one board, and the agent reads the surrounding context before it acts. Full comparisons: Notion, Miro, Excalidraw, and Obsidian.
Yes, free to use during early access at app.dim0.net. The product is also open source: fork it, self-host it, bring your own model keys.
Yes. Inspect it, fork it, self-host it. It’s all on GitHub.
Claude, GPT, Gemini, Mistral, DeepSeek, Qwen, Kimi, GLM. Pick what you trust; switch anytime.
Yes. Real-time multi-user collaboration is live: live cursors, presence, edits that sync without merge conflicts, and shared AI agents that work on the same board. Bring your team or work solo; the canvas works the same either way.
Operational transforms with last-write-wins for conflicts, the same approach Figma and Excalidraw use, not CRDT. Every edit becomes a typed operation, transformed against any concurrent edits, applied on the server, then broadcast to everyone live on the board. The canvas engine underneath (canvas-harness) is sync-agnostic: it exposes typed ops with previous-value slices, so OT, CRDT, or any custom protocol all fit.
Dim0 runs in the browser today. Tablets work well; phones are read-friendly. Native apps may follow.
Complex thinking is spatial. A canvas keeps structure, relationships, and partial ideas visible at once. Chat buries context.
Read selected context, search the web, run code, and generate nodes, widgets, charts, or summaries directly on the board.
Yes, we call them mini-apps. Describe what you want and Dim0 generates a real, interactive React app right on your canvas. Unlike an artifact trapped in a chat thread, a mini-app is a node on your board: it persists, your team can use it live, it can read the notes and data next to it, and you can open the code, edit it, or export it. They work best as focused, single-purpose tools like calculators, charts, visualizers, and quizzes, spun up in seconds.
Thousands. We built our own canvas engine, canvas-harness: 10k visible nodes pan at ~80 fps on an M1, idle stays at ~120 fps. Same league as Excalidraw and tldraw. Most boards live in the hundreds; the ceiling is there if you need it.
On the cloud at app.dim0.net: prompts and board context are sent only to the model provider that produces the answer (Anthropic, OpenAI, Google, etc.) under their terms. We don’t train on your content, we don’t sell data, we don’t profile you for ads, and we run no behavioral telemetry on your boards. Self-host: everything stays on your infrastructure. Local Postgres and vector DB, your own model keys, no calls back to us.
Pure Markdown. Download any note and paste it into any other editor: Obsidian, VS Code, plain text. Boards export cleanly too. No proprietary blocks, no vendor format you can’t walk away from.
Your turn
Free to start·Open source·Your data stays yours·app.dim0.net