File Extension Database

Open OOS File

The OOS file extension is associated with Apache OpenOffice (OpenOffice.org), a suite of office applications (word processor, spreadsheet editor) and others, compatible for various platforms and operating systems.

More About OpenOffice

Apache OpenOffice is an open source office software package, which, like Microsoft Office, includes a word processor, spreadsheet, presentation, vector drawing tools, and a database.

It supports numerous file formats, however the default format (and extension) is the standard ISO/IEC OpenDocument Format (ODF).

OpenOffice supports other common formats, and focuses on maintaining compatibility with the OpenOffice XML standard, Microsoft's format, as well as supporting more than 110 languages.

Apache OpenOffice is one of the successors of the OpenOffice.org project, however, some experts consider it a derivative of it, and integrates features of other office suites such as IBM Lotus Symphony.

The OOS file contains a spreadsheet from some earlier versions of Apache OpenOffice.

A spreadsheet is a type of office document that allows manipulating numerical and alphanumeric data, from the mathematical, statistical, algebraic and even graphical point of view, arranged in the form of tables composed of cells, which are usually organized in a matrix of rows and columns.

In the same cell it is possible to carry out basic operations such as sum, subtraction and multiplication as if it were an electronic calculator, entering the numerical values accompanied by the necessary arithmetic operators.

However, in any spreadsheet, it is also possible to perform complex calculations with formulas and/or functions and draw different types of graphs.

Although OOS files are not obsolete, they have been falling out of use, due to the presence of more powerful formats, such as ODS and XLSX.

Software to open and work with an OOS file

How Can I Open OOS File on Windows

We researched and learned that the best way to open OOS file is to find a OOS file in question in Windows OS File Explorer and double click on it to launch the corresponding application.
If a OOS file is not opened in an application and you instead get a "Windows can't open a file" error message you should try looking for an application which can open the file in question.
If you know the application which can open OOS file then run it and see if there is a File->Open main menu option in the application.
If you don't know the application which function as OOS file opener then try to search online for "OOS viewer", "application to open OOS file" or "open OOS file" queries in the search engine you like.
Install the application you found and check if it can open OOS file

How Can I Open OOS File on Mac OS

We recommend to find a OOS file in question in Mac OS Finder and double click on it to launch the corresponding application.
If a OOS file is not opened in a Mac OS application and you instead get a "There is no application set to open the file" error message you can click on "Search App Store" in the error dialog and Mac OS will show you applications compatible with OOS file.
If you know the Mac OS application which can work as OOS file opener you can choose the "Choose Application..." option in the error box to associate the file extension and open OOS file in it.
If you don't know the application which can open OOS file then try to search for "OOS viewer", "application to open OOS file" or "read OOS file" queries in the online search engine you like.
Install the application you found and check if it can read OOS file

How Can I Open OOS File on Android

If you downloaded a OOS file on Android device you can open it by following steps below:

In the Android apps list on your Android device find "My Files" or "File manager" app and tap to start it.
Tap on "Downloads" folder inside the app.
You should see your downloaded OOS file in that folder.
Tap on the file. If Android device supports opening the file you downloaded it will open in the corresponding app.
If file does not open you can look for the corresponding app that can open the file by searching Android App Store for the "OOS".
If you cannot open the file with the apps from Android App Store it is possible that the file could only be opened on desktop platforms such as Windows or Mac OS. Try searching for "OOS viewer", "OOS file reader" online and see if any desktop applications can open it.
It is also possible that the file you downloaded is outdated and is no longer supported.

How to Open OOS File on iPhone or iPad

To open OOS File on iOS device follow steps below:

We advies to open Files app on your iPhone or iPad device. You can find it by swiping down on the home screen and typing "Files" in the search bar.
Tap on the Downloads folder on the Files app home screen.
You will see all files that you recently downloaded. Tap on the OOS file to view it.
If you have the right app that can open it it will automatically launch and open your file.
If you don't have the app which can open it you need to serch Apple app store for "OOS". This way you can find apps which can open OOS files.
If this doesn't help it is possible that your file could be opened only by the desktop application. To find an app which can open it on desktop look for "OOS viewer" or "OOS file" online in your favorite search engine.

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