There are 7 other file types using
the CLS file extension!

empty icon.cls - ArcView geocoding classification file

empty icon.cls - JavaScript class definition

cls icon.cls - Microsoft Visual Basic 4 class module add-in

cls icon.cls - Microsoft Visual C++ class definition

empty icon.cls - SQLite 3 file

empty icon.cls - LaTeX data

empty icon.cls - Java class definition

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CLS file extension - AIM AOL Instant Messenger data

What is cls file? How to open cls files?

File type specification:

Various data file type icon Various data file type

cls file icon: cls filetype icon

The cls file extension is associated with the AIM AOL Instant Messenger, a communication program available for various platforms

The cls file contains some kind of data. It is in SQLite 3 format.

Updated: June 28, 2018

The default software associated to open cls file:

AOL Instant Messenger (AIM) icon

AOL Inc. logoAOL Instant Messenger (AIM)  Microsoft Windows software

Company or developer:
AOL Inc.

AOL Instant Messenger, simply known as AIM, is an instant messaging and presence computer program. client software s available for Microsoft Windows, Windows Mobile, mac OS, Android, iOS, BlackBerry OS.

Help how to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.

List of recommended software applications associated to the .cls file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open cls file, edit cls file, convert cls file, view cls file, play cls file etc. (if exist software for corresponding action in File-Extensions.org's database).

Unspecified and all other actions for computer programs working with cls file - AIM AOL Instant Messenger data

Click on the software link for more information about AOL Instant Messenger (AIM). AOL Instant Messenger (AIM) uses cls file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

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