Live brainstorm together
Brainstorm Together. Same Map, In Real Time.
Send a link, see everyone's cursor land on the canvas. The brainstorm tool that skips the signup, the workspace setup, and the permission popups — just you, your group, and the map you're building.
Why this matters
Brainstorming with someone shouldn't be a project.
You had an idea five minutes ago. You want a second brain on it before the spark fades — your co-founder, your editor, your study partner, the friend who has good taste. With most tools that means: create a workspace, invite by email, wait for them to make an account, configure who can edit, paste the link… and by then the idea is cold.
Dumbnote is a brainstorm tool built for the moment the thought is hot. Open a mind map, click Share, send the link. Your partner clicks it and lands on the same canvas — no signup screen between them and the work. You see each other's cursors, you both add nodes, you build out the idea before it gets away.
And because nothing lives on a third-party server, the brainstorm stays in your room. Close the tab, the session is gone. No archived revision history, no permissions to manage later, no platform that owns the draft. Offline mind mapping with everyone's cursor on the same canvas — that's the whole feature.
How it stacks up
How live brainstorming compares to the usual cloud-doc setup
| Capability | Dumbnote | Google Docs | Notion | Heptabase |
|---|---|---|---|---|
| Brainstorm without signing up | ✓ | × | × | × |
| Visual mind-mapping canvas | ✓ | × | × | ✓ |
| No cloud account stores your draft | ✓ | × | × | × |
| Share-by-link in one click | ✓ | ✓ | ✓ | ✓ |
| Live cursors with awareness | ✓ | ✓ | ✓ | ✓ |
| Free, forever | ✓ | ✓ | partial | $$ |
For your work
Brainstorm a Novel, a Pitch, or a Study Plan — Without the Cloud-Doc Friction.
Writers brainstorm plot beats with their editor. Founders brainstorm a pitch with the team. Study groups brainstorm the night-before review. Designers brainstorm a concept under NDA. All of these share the same shape: everyone on the same map, no time to onboard a tool.
Dumbnote's live share works in the browser you already have open. Send the link on whichever channel feels right — Signal, iMessage, a calendar invite, a sticky note. The other side joins by clicking it. That's the entire setup. When the brainstorm ends, no shared workspace lingers in someone's billing dashboard.
How it works
How live brainstorming works
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Open a mind map
Start in any document. The brainstorm tool is the same canvas you already mindmap on — there's no separate "shared mode" to learn.
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Click Share — get a link
Hit the Share button and Dumbnote hands you a link. That link IS the brainstorm room — no separate code to type, no email to send.
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Send the link however you want
Drop it in Signal, iMessage, a Slack DM, a calendar invite — whatever feels natural. Anyone with the link can join; anyone without it can't.
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Brainstorm in real time
Their cursor appears on your canvas with their initials. Add nodes, drag connections, paste images — every change shows up on their screen instantly. The map is the brainstorm.
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Close the tab when you're done
No "delete the workspace" step, no permissions to revoke. Each side keeps a local copy of the map; the live link stops working.
See it in depth
One link. One click. You're brainstorming together.
The Share dialog is the whole onboarding — copy the link, send it however you want, and your partner is on the same canvas within a click. Their cursor shows up with their initials; your cursor shows up on theirs.
- The link IS the invitation — nothing else to send, nothing else to set up.
- Their cursor appears with their initials. So does yours on their side. You can both work without stepping on each other.
- If the WiFi flickers, your map keeps going. The session catches itself back up when the connection returns.
Common questions
Questions visitors ask before they try it.
Is this really free? No catch?
Yes. Brainstorm with anyone, as often as you want, for as long as the session runs. No per-seat fee, no time limit, no premium upgrade to unlock it. The whole brainstorm tool is the same free, offline mindmap you already use.
Do I need to create an account?
No. Neither of you does. Open the page, click Share, send the link — your partner clicks it and they're in. There's no signup screen, no email to verify, no profile to fill out.
Is the brainstorm really private?
Yes. The map data flows directly between your browser and your partner's. Nothing is stored on a server in the middle, nothing is indexed by us, and there's no archived revision history sitting in someone's account. Close the tab and the session ends.
How many people can brainstorm together?
As many as you invite. Send the link to one partner, four teammates, your whole study group — anyone who clicks it lands on the same canvas with their own cursor. Each person's initials appear in a colored chip up top so you always know who's in the room.
What if my partner's WiFi drops mid-session?
You both keep going. Your local copy of the map stays editable, and theirs does too. When the connection comes back, the two sides catch up automatically — no lost edits as long as both browsers stay open.
Does it work on my phone?
Yes. Modern browsers on phones, tablets, laptops — anything with Chrome, Safari, Firefox, Edge, or Brave. Brainstorm on a phone, your partner on a desktop. Both sides see the same canvas.