GCalQuickTab is a Firefox extension based off of a Chickenfoot script that I wrote called TabBetweenGmailCal. This script is no way endorsed by Google and you should use it at your own risk!

Also, I would like to apologize for the sad state of this page -- I'm just so excited about the release of Google Calendar that I didn't have time to clean it up!

What's the point of this extension?

It's not that earth-shattering, but for some reason, I think it's fun. Basically, if you have Google Calendar as well as Gmail, it lets you use the navigation links in the upper-left-hand corner of those webapps to jump between the open tabs you have for them in Firefox.

Version 0.2 adds Keyboard Shortcuts!

With GCalQuickTab, you can use keyboard shortcuts to navigate between Gmail and Calendar:

lTakes you from mail to calendar
gTakes you from calendar to gmail

What license is it available under?

It's in the public domain -- enjoy!

Can I get it now?

Yes, it is now available on the Mozilla Update site.