Features:
• Several beautiful event views: dayGridMonth, dayGridWeek, dayGridDay, timeGridWeek, timeGridDay, listMonth, listWeek, listDay, listYear
• Built-in locale support for more than 75 languages.
• Load events from MySQL, CSV, MS Access (MDB) or JSON.
• Configure events directly via the properties of the extension.
• Configure week start (Sunday or Monday)
• Navigation: previous month, next month, previous year, next year, today
• Link events to local pages or external websites.
• Optionally add extra full calendar options.

Demo:
https://wysiwygwebbuilder.com/support/calendars/fullcalendar.html
More information:
https://www.wysiwygwebbuilder.com/fullcalendar.html
The demo version can be downloaded via the Extension Manager (Menu->Tools->Extension Manager->Online Gallery->Calendars).
Note that this is a commercial extension, it is not free. The demo is fully functionality, however the properties will not be saved.
The price is $7.95
https://secure.2checkout.com/order/checkout.php?PRODS=41285035