Zap Calendar comes bundled with several useful modules and plugins, extending Zap Calendar's capability.  Here is a description of the modules and plugins that are available:

Modules

Zap Calendar - This module allows the display of any Zap Calendar view within a module.  This includes both AJAX and non-AJAX based views.  This module effectively allows the component display of Zap Calendar to be displayed in a module.

Zap Calendar Controller - This module allows a user to toggle the display of individual categories of a view.  This module works with both AJAX and non-AJAX based views.

Plugins

Zap Calendar plugins extend the functionality of your calendar.  Just like Joomla plugins, you can pick and choose the Zap Calendar plugins you wish to use with your calendar. Some plugins are only available with the pro and standard versions of Zap Calendar.

Comment - Post comments on events, creating your own discussion database within Zap Calendar.  Event owners can receive e-mails when comments are posted for their event. Utilizes recaptcha plugin if installed.

Community Builder Integration - Utilize Community Builder avatars and user profiles in RSVP's and event comments.

Google Maps - This plugin displays the map location of an event. When the location of an event is specified, this plugin finds this location and displays it using Google Maps.

Google Weather - Display weather information directly on your calendar using Google's weather data and this plugin (see Z Weather plugin for another weather option).

iCal Subscribe - This plugin allows you to subscribe to external calendars supporting the iCal format and display them using Zap Calendar. Subscriptions are updated automatically using a cron job.  This plugin allows multiple external calendars to be combined into a single calendar that can itself be made available as an iCal subscription.

JomComment Integration - Use the popular JomComment component to post comments on individual events.

JomSocial Integration - Utilize JomSocial avatars, user profiles and post Wall activities from RSVP's and event comments.

Recaptcha - Add captcha support for visitors adding or suggesting events and posting comments using the comment plugin.

More Info - Add custom fields to the event, or use the default fields for event contact, phone # and e-mail address.

Photo Header - Display a different photo each month at the top of your calendar.

RSVP - Attend events posted on Zap Calendar and see who else is attending the event. Event owners can export RSVP data to Excel or CSV files as well as send e-mails to attendees.  Attendees can receive automatic e-mail reminders when event approaches or when an event date or location change.

Search - Provides searching of Zap Calendar events using Joomla's built-in search feature.

Zap Article - This is a Joomla article plugin.  When linking an ZapCalendar event to an article, this plugin links the article back to the event to show date, time and location information directly within the article.  It will also display any ZapCalendar event plugins that are being used.

Zap Controller - This is the plugin version of the Zap Calendar Controller. This plugin displays the category controller directly above the calendar, so it does not depend on the module positions in your template

ZWeather - Display weather information directly on your calendar using ZWeather and this plugin (see Google Weather plugin for another weather option).