.OST File Open With

There is 1 File Type for .OST - Outlook Offline Data File

.OST File Type - Outlook Offline Data File

In Windows .OST File Open With

  • Microsoft Outlook 365
  • Remo Convert OST to PST
  • OEMailRecovery.com Outlook Recovery Toolbox
  • 4Team Corporation OST PST Viewer
  • Aryson OST Recovery
  • EdbMails
  • Regain OST to PST Converter

Operating System (OS)

An operating system is the software that directly manages a system’s hardware and resources, like CPU, memory, and storage.


Windows also known as Microsoft Windows or Win is a graphical operating system developed and published by Microsoft. It provides a way to store files, run the software, connect to the Internet, and lots more.

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