Alarm clock, timer, and countdown with sound, pop-up message, and desktop notification.
This extension is a lightweight alarm clock, timer, and countdown. You can set multiple alarm times with optional alarm messages. You can choose among several different alarm sounds and notification variations (like a desktop notification or a pop-up window).
This extension has been optimized for lightweight, performance, and privacy. In contrast to many similar extensions, it uses no background resources (you can verify this with Chrome's built-in task manager) and no tracking software (Google Analytics, etc.).