Chalk

An infinite chalkboard, drawn on a tablet and shown on the big screen beside it.

Everything works without an account - boards are kept on the tablet. Signing in puts them on the server instead, so they follow you to another device and can be shared as a view-only link.

• A second screen, not a mirror. The big screen frames the whole board while you work in a corner of it - or follows your view if you would rather.
• Chalk, not paint. Pen, marker and highlighter on paper or slate, wonky shapes tidied up as you draw, and handwriting turned into real text.
• Drawings, not just sketches. Constrained geometry on real paper sizes, with dimensions, a title block, and DXF and PDF out.
• Share a link. Anyone can watch the board live in a browser, on any network, with nothing to install and no account to make.

Boards are private until you share one. A shared board opens at its own address, is read-only to whoever holds it, and the link can be revoked at any time.