Zimlets™ is a mechanism for integrating the Zimbra Collaboration Suite with third party information systems and content. Zimlets are also used to intermix user interface within the Zimbra Web Client for our Email, Calendar, Address Book, and Documents applications. You can create other Zimlets so that users can interact with your company resources or other defined applications from the Zimbra Web Client.
For information about how to develop and configure Zimlets see the Zimlets - A Mechanism for Integrating Disparate Information Systems and Content with the Zimbra Collaboration Suite specification at www.zimbra.com. Go to the Zimbra gallery, http://gallery.zimbra.com, to see the type of Zimlets that can be used within the ZCS.
From the administration console, you can add new Zimlets, set access privileges by COS and by individual accounts, and disable and uninstall Zimlets from ZCS. If you create a Zimlet that needs additional configuration after deployment, you will need to use the ZCS CLI to access and change the Zimlet configuration. See the Working with Zimlets chapter in the Administrator's Guide for details.
Zimlets that are deployed are listed on the Zimlets contents pane. You can remove Zimlets, disable and enable them from the Zimlets content pane.
ZCS includes preconfigured Zimlets that enhance the user experience while working in the Zimbra Web Client. These Zimlets are already deployed and made available from the COS. You can manage which Zimlets are available to users from the COS Zimlets tab.
com_zimbra_date. When users click on a date either in the email or on the mini-calendar, their calendar schedule for that date displays.

com_zimbra_email. Users can see complete contact information if it is available in their address books.

com_zimbra_url. Users can see a thumbnail of the website that is listed in an email message if it is available. They see the screen below if it is not available..
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com_zimbra_phone. Users can click on a phone number that displays in any of the application pages to quickly call that number if they have the installed a VOIP software application such as Skype or Cisco VOIP. When they click on the phone number, the VOIP application is launched.
