Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .ici

2 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .ici file?
  • Which program can create the .ici file?
  • Where can you find a description of the .ici format?
  • What can convert .ici files to a different format?
  • Which MIME-type is associated with the .ici extension?
ICI Source Code .ici file icon

ICI Source Code

The ICI file is an ICI Source Code. ICI is a C-like, high level language originally developed by Tim Long and placed into the public domain.
Category: Development files
Application: ICI
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
AcuSQL Precompiled File
CodeBox Library
LiveCode Stack File
Haml Source Code
Yukes 3D Object
AMPAC ICI Data .ici file icon


The ICI file is an AMPAC ICI Data. AMPAC is a general-purpose semiempirical quantum chemistry program. It is marketed by Semichem, Inc. and was developed originally by Michael Dewar and his group.
Detailed description not available
Category: Data files
Application: AMPAC
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
AMPAC Archive File
AMPAC Visualization File

Other types of files may also use the .ici file extension. If you have helpful information about .ici extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

MSDN InfoViewer Topic Data
I-DEAS Document
PSDsoft Express JTAG Chain Information
Visual Studio .NET DB Project Indexing Options
ixiQuarks Preferences Data
Web of Science Databases Output

The .ici filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

icl (1), ic (1), oci (1), ci (1), kci (1), ixi (1), isi (1), ii (1), idi (1), ico (1), ick (1), uci (1), cii (1), lci (1), jci (1)

Can't open a .ici file?

If you want to open a .ici file on your computer, you just need to have the appropriate program installed. If the .ici association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.ici

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android