>> CWKS file

CWKS file format description

Many people share .cwks files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .cwks file can be edited, converted or printed with. On this page, we try to provide assistance for handling .cwks files.

1 filename extension(s) found in our database.

.cwks - ClarisWorks Data

The CWKS data files are related to AppleWorks. The CWKS file is a ClarisWorks Data. ClarisWorks is an integrated office application, which provides word processing, graphics, illustration, spreadsheet, charting/graphing, presentation and database capabilities.

Data files
- / -
ClarisWorks Data related extensions:
ClarisWorks Assistant
ClarisWorks Font
ClarisWorks 3 Document
ClarisWorks Color Palette
ClarisWorks Database
ClarisWorks Drawing Document

Naturally, other applications may also use the .cwks file extension. Even harmful programs can create .cwks files. Be especially cautious with .cwks files coming from an unknown source!

Can't open a .cwks file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


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 one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .cwks file extension is often given incorrectly!

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

cks, cwk, cwms, cws, wks

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Lotus 1-2-3 Worksheet
ClarisWorks Template
ChordWizard Songtrix Song
Windows CE ROM Image Checksum
Lotus 123 Spreadsheet
Cricket Audio Stream

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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