Google Calendar Extension is an official Google Chrome extension. It was created by Google, and can be found in the Chrome Web Store. The extension adds a button to the toolbar which allows the user to add events to their calender, or to quickly check for upcoming appointments.
Easily check Google Calendar and add new events from websites you visit.
Get a button on your browser toolbar that you can easily click to see upcoming events from Google Calendar, without ever leaving your page. And if you're on sites like Facebook or Evite, you can click the button to instantly add events to your calendar. The button shows a green plus sign whenever there are events on the page you're viewing that can be added to your calendar.
The extension detects events on any site that uses the hCalendar microformat or derivative microformats like hResume.
Directions for Common Issues: — This will show whatever calendar you are logged in within Chrome. If you want to use a Google Apps calendar, you should login to that account first, then open the extension. — To select visible calendars, set them in the main calendar page. An Options page will definitely be added before this extension can be deemed a 1.0 version.
Featured on the Chrome Blog as a “By Google” extension: http://chrome.blogspot.com/2010/11/new-chrome-extensions-by-google.html
To see how new features and bugs are progressing, check out the Issues tracker: http://code.google.com/p/google-calendar-crx/issues/list . While I make every attempt to keep up with comments here, I can keep track of features/bugs better using the Issues tracker — please send bug reports and feature requests there.
If you're interested in keeping up with the latest beta version, you can download the latest source code from: http://code.google.com/p/google-calendar-crx/source/browse/ and Load Unpacked Extension to try it out.