Infinite canvas
Thinking, laid out in space.
Notes, code, math, and shapes on one infinite canvas. Nested boards keep big projects structured without losing the view.
Your canvas thinks back. Together. The open-source, real-time collaborative AI canvas with notes, code, and agents on one infinite board.
Notes, code, and agents on one infinite board.
Open-source, real-time collaborative — solo or with your team.
Free to start·Real-time collab·Open source·8 AI models
Ask a question · the agent builds a mindmap right on your canvas
— A real Dim0 board
Open inapp.dim0.netSticky notes, code, math, charts, sketches, and an AI agent — all on one board.
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.
— How it works
One prompt, work on the canvas.
The agent reads what's on your board, goes out and does the work, and drops the result where you're already thinking.
01 · READ
Reads the board
Starts from your actual workspace, not a blank chat thread.
02 · ACT
Searches, synthesizes, runs code
Parallel reasoning across sources. No tab switching.
03 · WRITE
Builds on your board
Nodes appear next to your notes. Editable, connected, live.
— Features
Built canvas-first. Agent native.
Most tools bolt AI onto a doc. Dim0 is built the other way around — the canvas is the interface.
Mapify
Notes become structure.
Select any notes and turn them into mind maps, schemas, or diagrams in one gesture. Mapify. Drawify. Schemify.
Board-aware AI
Reads first. Acts second.
The agent reads your board before it acts. Searches, runs code, writes results back as nodes you can edit and connect.
Code, charts, docs
Every kind of node, one canvas.
Sandboxed code nodes. Live widgets. Uploaded documents. Everything stays connected to the thinking that produced it.
— 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 — 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".
— Rich notes
Notion-grade notes. Drawn on a canvas.
Tags, math, toggles, sub-pages, references, code. Edit by hand — or ask AI to draft and revise the note in place.
— Use cases
What it feels like to think on Dim0.
Four shapes of work that get faster the moment your tools share a canvas.
Learn
Turn a question into a map you can walk.
Ask anything. The AI mindmap generator builds a structured map on your canvas. Follow threads, keep your map, never lose where you were.
Research
Pull benchmarks. Chart them. Annotate.
Bring sources, run code, render charts. Compare results side by side without juggling tabs.
Sketch
Rough shapes that the AI understands.
Excalidraw-style freehand shapes, system diagrams, flows — drawn by you or generated. The agent reads them as context.
Write
Long-form notes, spatially arranged.
Notion-grade rich notes — math, code, tags, toggles, sub-pages — sitting wherever you put them on the board.
— Themes
Six themes. Light and dark.
Parchment, 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.ai
— Privacy
Your data stays yours.
Cloud Dim0 is private by design — not just because you can self-host. Encrypted in transit and at rest, never trained on, no behavioral telemetry. The hosted product respects you the same way the open-source code does.
Encrypted in transit and at rest
TLS for everything on the wire. At-rest encryption on the database and uploads. No plaintext on the network, no plaintext on disk.
Never trained on
Your boards are not training data. We don't use your content to train models — ours or anyone else's. Prompts go only to the provider you pick, for the request you sent.
No telemetry, no profile
No session replay, no behavioral analytics inside the canvas, no record of what you click or where you linger. We make a thinking tool, not an ad business.
Want absolute custody? Dim0 is MIT and self-hostable — local Postgres, local vector DB, your own model keys, nothing leaves your infrastructure. Read the full policy →
— 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
— Open source · MIT · self-hostable
Nothing is trapped.
An open-source AI whiteboard you can self-host. The codebase is public. Run it yourself. Walk away anytime with everything you made.
See how it works
Full codebase is public. No black boxes.
Run it yourself
Self-host for full control over your data.
Take it with you
Notes are pure Markdown. Boards export cleanly. No proprietary format.
— 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 — upgrade any time from your account.
Self-host
Run it yourself, own everything
FreeMIT licensed
- Full source on GitHub
- Your infrastructure, your data
- Bring your own model keys
- Notes in plain Markdown
- Unlimited live collaborators
- No caps, no lock-in
Start here
Free
For personal exploration
€0forever
- 40 AI requests / day
- 5 boards
- Up to 5 live collaborators / board
- 1 document upload / board
- Basic AI actions
- Community support
Free is limited while we run on a small budget — we’re making it more usable over time.
Plus
For active daily workflows
€11.99/ month
- Unlimited AI requests
- Unlimited boards
- Up to 20 live collaborators / board
- Unlimited document uploads
- Advanced AI actions
- Priority support
Upgrade any time from your account — no card needed to start.
— 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 — 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.
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.
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.
phase transitions#mindmapsourcesdef solve()
Your turn_
Free to start·Open source·Your data stays yours·app.dim0.net
