.ics
| File Type 1 |
 Calendar 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 |
| macOS |
 Apple Calendar
 Mozilla Lightning
Flexibits Fantastical |
| Unix |
Mozilla Lightning Horde Kronolith  Claws Mail with vCalendar plugin
|
|
| Updated |
March 6, 2009 |
| File Type 2 |
 IronCAD 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 |
IronCAD
|
|
| Updated |
2007 |
| File Type 3 |
 IC Recorder Sound File |
| File Format |
Proprietary (Sony) |
| Usage |
Open manually |
| Popularity |
★ ★ ★ ☆ ☆ Average |
| Description |
Original sound file format used for recording messages on the Sony IC recorder, i.e. the Sony ICD-R100.
|
| Open With |
| Windows |
 Sony Digital Voice Player
 Microsoft Windows Media Player with Sony ...
|
|
| Updated |
2007 |
|
