Whiteboard

Overview

Whiteboard is a shared drawing surface for your workspace. Open a board and you get an infinite canvas with shapes, arrows, freehand drawing, text and sticky notes. Invite teammates and you'll see their cursors move and their edits appear live — every change streams over a WebSocket and is autosaved, so the board is always up to date for whoever opens it next.

Features

• Infinite canvas. A familiar shapes-and-arrows drawing surface (built on the Excalidraw model) with freehand pen, text, sticky notes, pan and zoom.
• Real-time collaboration. Edits stream to everyone on the board over a WebSocket, so the scene stays in sync as people draw.
• Live presence. See who else is on the board — each collaborator gets a coloured avatar, kept fresh by a presence heartbeat.
• Autosave. The scene is persisted automatically as you work; reopen a board and it's exactly where you left it.
• Sharing & access control. Grant specific teammates a role on a board and revoke it later; boards shared with you show up in a "shared with me" list — even across organisations.
• Board management. Create, rename and trash boards from a simple list of everything you own and everything shared with you.

How it works

Each board's scene is stored as JSON in the platform database and autosaved by the editor. While a board is open, the editor holds a WebSocket to a per-board channel that relays both the live scene and presence (cursors and avatars) between everyone viewing it. Per-user access is governed by object grants, which also power cross-org sharing.

Canvas model

Excalidraw scene JSON, autosaved to the platform database

Collaboration

Per-board WebSocket channel (live scene + presence)

Sharing

Per-user object grants, including cross-org "shared with me"

Auth

Workspace single sign-on (OIDC)