An infinite canvas for thinking, designing, and organizing ideas.

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Draw, organize, and collaborate without friction

Bitarium combines a focused canvas with a workspace sidebar so sketches stay easy to find and share.

Bitarium workspace showing the infinite canvas, folder sidebar, and Excalidraw-style drawing tools
Sketch on an infinite canvas, organize drawings in folders, and collaborate in real time.

Excalidraw-powered canvas

Sketch diagrams, wireframes, and whiteboards with a familiar toolset, smooth panning, and an infinite workspace.

Learn about the canvas

Folders that stay organized

Group drawings by project, give folders custom colors and icons, and expand only what you need in the sidebar.

See folder tips

Real-time collaboration

Invite collaborators to a drawing and see updates instantly across every connected client.

Read the sharing guide

Auto-save by default

Every stroke is saved as you work, so ideas stay safe even when you jump between drawings.

Get started

Made for visual thinking

  • Product and UX teams — map flows, annotate wireframes, and keep workshop output in one place.
  • Engineering diagrams — whiteboard architecture, sequence ideas, and revisit sketches without digging through exports.
  • Teaching and workshops — share a live canvas with collaborators and build together in real time.

Read the getting started guide

Open your canvas

Create a free account, start drawing, and invite collaborators when you are ready.