Four editors.
One desk.
Real spreadsheets, documents, PDFs and drawings, running in this page on your device. Everything you open or save stays in this browser's own storage.
Files stay in this browser, in its own storage on this device. No upload. No account.
GridCraft
Opening gridcraft…
The first visit takes a moment. The editor runs on this device.
Saves from the editors land on the desk above. A workbook's Export to PDF becomes its own PDF entry. Download anything you want to keep outside the browser.