nthClock
nthClock is an open source desktop alarm clock for Windows.
An open source desktop alarm clock for Windows is called nthClock. It has a small, programmable digital display that shows the time and has customisable colour and size. Alarms can be programmed to snooze and can repeat at regular intervals or on particular days of the week. The time formats of 12 hours, 24 hours, and % are supported. It was made to be dependable and simple to use. Version 3 might come with unidentified improvements, additions, or bug fixes.