OS Calendar provides availability calendar feature for properties of OS Property.

Shack Editorial Calendar is designed for people with busy Joomla sites. With this extension, you can manage large amounts of Joomla articles. You can create, edit and schedule all your content from a single calendar screen.

Events Management extension with a calendar module. Available in more 40 languages, iCagenda has a responsive and flexible design, with a theme pack installer inside.

DPCalendar is a full responsive native Joomla calendar and event manager with Google calendar integration. It makes the most of all the Joomla features that any online Joomla calendar and event manager should, such as ajax powered event browsing/manipulation, drag'n drop, front end editing, nested calendars, CalDAV and ACL support. DPCalendar integrates seamless other calendar systems like Google Calendar, Facebook Events, MS Exchange (Outlook) or iCloud without manual syncing or cron jobs. It integrates seamless with Bootstrap 2/3/4 and UiKit.