A daily updated filename extension database!

OOS file extension

The table below provides useful information about the .oos file extension. It answers questions such as:

  • What is the .oos file?
  • What program do I need to open a .oos file?
  • How can the .oos file be opened, edited or printed?
  • How can I convert .oos files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ OpenOffice.org Spreadsheet

OpenOffice.org Spreadsheet .oos file icon
OOS file is an OpenOffice.org Spreadsheet. OpenOffice.org is a multiplatform, multilingual, open source office suite.
OOS format description not yet available
Category: Document files
Application: OpenOffice.org
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
OOS aliases:
OOS related links:
OOS related extensions:
OpenOffice.org Script

OpenOffice.org Text

Other types of files may also use the .oos file extension.

🚫 The .oos file extension is often given incorrectly!

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

ios, kos, los, ois, oks, ols, oo, ooc, ops, os, oso, pos

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

FreePascal Object
NADCON Longitude Seconds Data
Trimble Position Data
ObjectScript Source Code
CHARTrunner Out-of-control Tests Definition
Origin Dialog Theme Data
NimbleGen Positions Data
Altair FEKO POSTFEKO Currents Data
Microsoft Office Profile Settings
OKScript Script

🔴 Can't open a .oos 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 cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .oos file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .oos file extension, write to us!

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