.o2 file: how to open it on Windows

1 Windows app registers the .o2 extension. Install one of them to open the file with a double-click.

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  O2

  O2 is a safe and flexible archive for personal data, such as contacts, accounts, credit cards, Wi-Fi settings, and everything that comes to your mind.

  Open source 3.4.0 ★ 6

Related guide: Change the default app for a file type in Windows