Firefox Computer Alarm Clock And Timer

Martin Brinkmann
Jul 17, 2009
Updated • Sep 25, 2019

If you run the Firefox browser in full screen mode or on a desktop where the taskbar is not displayed all the time, then you know that the system clock that is displayed usually on the desktop is not accessible at all times as well as it is attached to that taskbar.

If you need access to a clock in this situation you may want to check out the Simple Timer extension for the Firefox browser.

Update: The extension is no longer available. We suggest you check out Timer instead which is still available and offers similar functionality. End

It displays a clock in one of the browser toolbars which you can use instead. That's the core feature of the extension but not the only one that you may find useful.

In addition to displaying the time, you can use it for other time-related activities such as setting an alarm, running a countdown or notifying you about specific events of interest.

One interesting option is that it supports different time zones that can be combined with the extension's notification feature. It is for example possible to add the New York, Tokyo and London timezones to the application and configure notifications using those time zones and not the one you are in.

Multiple locations - each with their distinct timezone - can be added in the options of the add-on for the Firefox web browser.

It is a bit unfortunate that only the local timezone can be displayed in the status bar while the other timezones become only visible when hovering the mouse over the icon and only if that feature has been enabled in the options. Notifications can be added easily in the options as well.

They can be created by selecting a time, timezone and description for the notification. You can have it run once or configure it to recur on a regular basis, for instance daily or weekly.

You find detailed options to modify the default format date and time are presented to you by the extension. You can select a 12 or 24 hour format for example and either use one of the preset formats for the date or define it in detail to your liking.

Simple Timer is an excellent Firefox add-on for users who like to have access to a system clock on their screen. The notifications, countdowns and timezones are an added bonus that may be interesting for some users as well.

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Software Name
Simple Timer
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Tutorials & Tips

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  1. owburp said on September 26, 2019 at 3:51 am

    When the Firefox Simple Timer extension was no longer a viable option, I switched to a similar utility that runs in Windows itself rather than within a browser (a portable version is also available) called Free Alarm Clock. Check it out here:

    Now that I’m moving off Windows and over to Linux, I’m using KAlarm. Note that I had problems running KAlarm in some desktop enviroments other than KDE.

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