Brainstorm docs

Brainstorm

Brainstorm is an infinite, freeform whiteboard that mixes streaming chat bubbles and runnable Python code cells on one zoomable surface. Think out loud, branch ideas, and run the numbers — all in the same place.

A Brainstorm board with chat bubbles, a Python code cell, and an image laid out on the grid
One board — chat, code, and images side by side.

Looking to just try it? Open the app — your board is saved locally in your browser and survives reloads.

What you can do

  • Pan and zoom across an infinite millimeter-paper grid.
  • Drop chat bubbles that stream answers from any OpenAI-compatible model, and branch the conversation into separate threads.
  • Write Python code cells that run right in your browser — with matplotlib figures, pandas tables, rich output, and an LLM magic wand that writes or fixes the cell for you.
  • Drop HTML5 snippets that render live in a sandboxed iframe.
  • Load, generate, and transform images (image-to-image), edit them inline, and sketch vector drawings.
  • Write rich-text documents and spreadsheets (with .docx / .xlsx import & export), and link a sheet into a code cell as data.
  • Keep multiple boards and switch between them.
  • Everything persists automatically in your browser — no account needed.
  • Sign in to sync your boards across devices, and subscribe to Plus to collaborate on shared boards in real time.

How the docs are organized

  • Getting started — run it locally or use the hosted app.
  • The canvas — panning, zooming, the grid, and the right-click menu.
  • Chat & LLM — chat bubbles, branching, and connecting a model.
  • Code cells — the in-browser kernel, the cell tree, the magic wand, and notebook export.
  • HTML5 snippets — live HTML/CSS/JS in a sandboxed iframe.
  • Images & drawing — image bubbles, generation, image-to-image transforms, and the paint tools.
  • Documents & spreadsheets — rich-text docs and spreadsheets with .docx / .xlsx import & export.
  • Boards — creating and managing multiple boards.
  • Accounts & billing — signing in, hosted models vs your own key, top-ups, and the Plus subscription.
  • Collaboration — cross-device sync and editing shared boards together in real time.
  • Persistence — how your work is stored.

Everything here is self-hosted — these pages ship as part of the project and deploy alongside the app and landing page.