Google Calendar

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Google Calendar
Google Calendar screenshot
Developer(s) Google
Written in Java[1]
Operating system Server: Linux
Client: any Web browser
Platform Java Virtual Machine
Type Electronic calendar

Google Calendar is a free time-management web application offered by Google. It became available on April 13, 2006, and exited the beta stage in July 2009. While users are not required to have a Gmail account, they are required to have a Google Account in order to use the software.




The interface of Google Calendar, designed by Kevin Fox (who also designed Gmail and the second version of Google Reader[2]), is similar to desktop calendar applications such as Microsoft Outlook or iCal on Mac OS X. The Ajax-driven interface enables users to view, add, and drag-and-drop events from one date to another without reloading the page. It supports view modes such as weekly, monthly, and agenda. Users can "quick add" calendar events by typing standard English phrases, such as "Dinner with Michael 7pm tomorrow". Users can also set the number of days to show in their custom view mode.

Content access

Events are stored online, meaning that the calendar can be viewed from any location that has Internet access. In the case of a user experiencing a hard drive failure, it also means that no data is lost. The application can import Microsoft Outlook calendar files (.csv) and iCalendar files (.ics), the de facto open calendaring file format), although at this stage only when the fields are all in U.S. format.[citation needed] Multiple calendars can be added and shared, allowing various levels of permissions for the users. This enables collaboration and sharing of schedules between groups. General calendars available for importing into one's account include those containing national holidays of various countries.

Sharing calendars

Google Calendar allows multiple calendars to be created and shown in the same view. Each can be shared, either read-only or with full edit control, and either with specified people or with everyone (public calendars). In February 2009, Google discontinued the option of searching for public calendars from the search field by removing the "Seach Public Events" button. It also disabled its public calendar gallery,[3] citing maintenance and usability issues. The company suggests adding calendars via the "Interesting Calendars" feature, known calendar URLs, or via email requests to friends.

Device synchronization

Currently, Google Calendar can be synchronized with mobile devices (e.g., BlackBerry, Palm, iPhone, Pocket PC) or with PC applications (e.g., Microsoft Outlook) via third party software, and natively with Apple's iCal (workarounds required for iCal 3.x, full functionality with iCal 4.x). Google Calendar is natively supported on Android -based mobile phones such as the T-Mobile G1 and the Motorola CLIQ. Event reminders can be sent via email, as well as via SMS to mobile phones in over 80 countries and regions.

Google integration

Google Calendar is integrated with various other Google services:

  • Gmail, Google's webmail service. When an e-mail that contains trigger words (such as "meeting", or dates and times) arrives, an "add to calendar" button is automatically displayed alongside it.
  • iGoogle, the user-designed Google homepage, in which users can choose and organize content in the form of "gadgets". The calendar is shown as a module on your homepage. This "gadget" offers options to edit how the time is displayed, which day the week starts on, and a link to "Add Event".[4]
  • Google Desktop, Google's desktop search software for Windows or Mac OS X. The mini-calendar gadget allows you view your agenda without having to open your browser. You can place it on your desktop or leave it docked in the sidebar.[4]

SMS updating via GVENT codes

For supported mobile carriers in the United States, the GVENT feature of Google Calendar allows users to create new events and check calendar information via SMS.[5]

2009 Introduction

On March 4, 2009, Google Calendar began offering offline support.[6]
On May 13, 2009, Google Calendar began offering to-do lists.[7][8]


Because Google Calendar is a web-based application, it runs on virtually any operating system, provided that the OS has a browser which supports the required web technologies. Since it uses recent browser features, browser compatibility includes Microsoft Internet Explorer 6, 7, and 8; Mozilla Firefox 2.0+; Opera 9.5; Google Chrome; and Safari 2.0.3.

Google Calendar supports exporting calendar data through a permanent HTTP URL containing iCalendar data, either at a public or "private" (hard to guess) address. This bears resemblance to the Webcal "protocol". Public calendars were searchable until February 2009.[citation needed] The data can be integrated with, among many others, Novell Evolution,[9] and Windows Calendar in Windows Vista (using the subscribe feature). The web link for the location of the calendar can be found in Google Calendar Settings in the Private Address section.

Google Calendar also supports CalDAV using iCal 3.x.[10]

See also


External links

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