Cool Clock is a free Chrome extension developed by Derek L. that offers a plethora of time-related features. This extension goes beyond your ordinary clock on a toolbar, providing a range of customization options to suit your preferences.

One of the standout features of Cool Clock is the ability to modify the appearance of the clock located in the toolbar. With different methods available for displaying time, you can personalize the clock to your liking. Additionally, the extension offers hourly notifications, which can be configured to announce the time using text-to-speech technology.

Cool Clock doesn't stop at just telling time. It also includes a stopwatch, alarm, countdown timer, and a simple calendar. The convenience of this extension extends to its integration with the Omnibox, allowing you to quickly search your to-dos and alarms by simply typing "clock".

With features like editable appearances, timezone settings, and various time display options, Cool Clock offers a comprehensive solution for managing time within your browser. Despite no longer being actively developed, this open-source project invites contributions from users through its GitHub repository.

Please note that "Cool Clock" was previously known as "Chrome Clock" and is not affiliated with Google.