Firefox is really becoming a power house for us, and the number of useful and productive extensions crop up everyday. Google Calendar is by far one of the best event organizing service we have used, and what better way than to club it with one of best applications that keeps us productive.
We usually setup Google Calendar to send us SMS alerts and emails for important events, but having with the Google Calendar Notification extension you can get event alerts right within Firefox.
Google Calendar Notifies provides robust notifications and display of your Google Calendars for today, as well as showing any upcoming all day events for tomorrow. The extension will add a status bar icon, hovering over the icon will show you the events that are upcoming.
So if you are a Google Calendar user and use Firefox, go ahead and install the extension and increase your productivity.