To do, doing, done. Cards carry notes, a due date, a priority and tags; drag them between columns or use the arrows. Overdue work turns red. Export the board as JSON to move it to another machine, or as CSV for a spreadsheet. Free, no account, kept in this browser, nothing uploaded.
JSON is the copy you load back here or on another machine. CSV opens in Sheets or Excel.
The board lives in this browser. It is saved on every change to this browser's local storage on this device. Clear the browser's site data and it is gone, so export a JSON copy of anything that matters.
Nothing is sent anywhere. There is no account and no sync. To use the same board on two machines, download the JSON on one and load it on the other.
Dates are yours. "Overdue" is judged against this machine's clock and the due date you set. Nothing reminds you; it just turns red.