What is iCal?
iCal was Apple's calendar application for Mac OS X, later renamed Calendar starting with macOS Mountain Lion. It allows users to create, manage, and sync events and to-dos across devices via CalDAV and supports the iCalendar and vCalendar standard formats for importing and exporting calendar data.
Files iCal opens
Misc Files
Click any badge for full per-format details - what it is, how to open it and how to convert it.
Download iCal
SOURCEsupport.apple.comofficial site - avoid third-party download portals