Allows importing and exporting of ics files to and from properties.
You can also export individual bookings from the list booking and edit booking pages.
The iCal feeds page shows urls for sharing with other devices :
You can import ics files too, on the iCal Import page.
When importing an iCal file, the Event end date should be the departure date of the guest. The Summary should be the Guest's name. Event description can contain all other details. When the event is added, it's created as a black booking so there are no invoice or guest details for these "bookings".
Remote feeds
You can create links to iCal files on other websites that will be imported every quarter of an hour. This allows you to pull bookings from other sites such as AirBNB etc.
To change the frequency of the imports, you can trigger pseudocron jobs using your server's cron functionality.