A pen notebook for Windows.

The page feels like paper. The tools stay at the pen.

For Windows 10 and 11, in early testing. It installs without administrator rights and updates itself. The installer isn’t signed yet, so Windows may say it protected your PC: choose More info, then Run anyway.

The pen and the mouse keep their own tools.Write with the pen, move a note with the mouse, and pick the pen back up. It’s still a pen.

A notebook grows toward the writing.A page has no last line: keep writing and it keeps going. Whiteboards have no edge at all.

Handwriting can become text.In the Windows app, select what you wrote and turn it into type, on the line it was written.

Share a whiteboard with a link.

Send an edit link or a view link. The other person opens it in Edge or Chrome and is on the board, with nothing to install and no account. Ink appears as it is written, and anything drawn offline merges when you reconnect.

Shared boards are kept on Deltella’s server at boards.deltella.com. Notebooks and boards you don’t share never leave your computer. What the server keeps.