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

empty icon.cls - ArcView geocoding classification

empty icon.cls - JavaScript class definition

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

cls icon.cls - AIM AOL Instant Messenger data

empty icon.cls - SQLite 3 data format

empty icon.cls - LaTeX data

empty icon.cls - Java class definition

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CLS file extension - Microsoft Visual C++ class definition

What is cls file? How to open cls files?

File type specification:

Various data file type icon Various data file type

Source code and script file type icon Source code and script file type

cls file icon: cls filetype icon

The cls file extension is used by Visual C++ and Visual Basic an integrated development environments from Microsoft that allows users to create programs for Microsoft Windows.

A cls file stores class definition used by Visual C++ and Visual Basic.

The default software associated to open cls file:

Visual C++ icon

Microsoft Corporation logoVisual C++  Microsoft Windows software

Company or developer:
Microsoft Corporation

Visual C++ is integrated development environment for C and C++ programming language used to create Windows and .NET applications.

Microsoft Visual Studio icon

Microsoft Corporation logoMicrosoft Visual Studio  Multiplatform software

Company or developer:
Microsoft Corporation

Microsoft Visual Studio is an integrated development environment (IDE) used to create applications for Microsoft Windows, Windows Mobile, .NET Framework, Silverlight as well as dynamic websites and web applications. Visual Studio is available for Windows and Mac.

Help how to open:

Use Visual C++ and Visual Studio to work with *.cls files.

How to convert:

Probably cannot be converted to other formats.

List of 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).

Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting cls files.

Software that open cls file - Microsoft Visual C++ class definition

Programs supporting the exension cls on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open cls file action.

Microsoft Windows:

Main software associated with cls file by default:
Visual C++ small icon Visual C++
Other suggested software:
Microsoft Visual Basic small icon Microsoft Visual Basic

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