this post was submitted on 17 Nov 2025
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I'm assuming you want to run this locally on your PC - with some HTML, CSS and JavaScript you can make one yourself. Here are a few examples:
https://github.com/apvastava/Alarm-Clock
https://dev.to/thedevdrawer/digital-clock-with-alarm-in-javascript-html-e27
https://www.geeksforgeeks.org/javascript/create-a-build-a-simple-alarm-clock-in-html-css-javascript/
https://codepel.com/html-css/html-alarm-clock-code/
Its a fairly common test app to make, so if you search for something like "HTML alarm clock" you should find a bunch of options. You can then style it with CSS and HTML as you please.