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.ics

File Type 1 Calendar File IconCalendar File
File Format Standard (developed by Internet Engineering Task Force)
Usage Open manually
Popularity ★ ★ ★ ★ ★  Popular
Description

Universal calendar format used by Apple iCal, Mozilla Sunbird, and Google Calendar; allows users to publish and share calendar data on the Web; other users can subscribe to published calendars and imports events into their own calendars.

Open With
Windows

IconMicrosoft Outlook

IconMozilla Lightning

IconAny text editor

macOS

IconApple Calendar

IconMozilla Lightning

IconFlexibits Fantastical

Unix

IconMozilla Lightning

IconHorde Kronolith

IconClaws Mail with vCalendar plugin

Published March 6, 2009
File Type 2 Generic IconIronCAD 3D Scene
File Format Proprietary (IronCAD)
Usage Open manually
Popularity ★ ★ ★ ★ ☆  Common
Description

Three-dimensional model or scene created with IronCAD, a 3D CAD program; may contain one or more 3D objects with colors, textures, lighting effects, and animation data.

Important: ICS files may automatically open in a calendar program such as MS Outlook due to the iCalendar file association. To open ICS files in IronCAD, you may need to right-click the file, select "Open With..." and choose IronCAD as the program.

Open With
Windows

IconIronCAD

Published 2007
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