How to open a file with .O extension?

File Type : Object File
Compatible with (Win10, Win8, Win7, Vista and WinXP)

You'll need a new app to open this .O file

Searching for the right program to open .O files?

"You'll need a new app to open this file" is probably the most common error faced by millions of Windows users every day. This is either because the program required to open a file is not available on your system or there may be other issues.

We recommend that you run a free scan to check for missing drivers.


What is .O file extension?

Object file produced by a C compiler; often created instead of a program file during the development process.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.

Software that can be used to open Ofiles:

  • GNU Compiler Collection (GCC)
  • GNU Compiler Collection (GCC)