Virto Office 365 Calendar app can display Internet calendars and has option to show additional fields on events in day, week, workweek, and multisource views.

Virto SharePoint Online Calendar supports images from Exchange Calendar in event description.

Sharing calendars in Office 365 with co-workers and external users is an everyday thing in business and corporate communications. Microsoft Office 365 provides a number of solutions for calendar sharing and creating Office 365 group calendar.