Cigati Outlook OST File Viewer

Free Outlook OST viewer to View, Read & Open corrupt OST files without Outlook

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User Ratings :

(Average Rating 4.8 Based on Reviews)

Free Download Version 18.0 Comparision

for Windows 10/8/7/Vista/XP

Features Specifications Screenshots Video Download Comparision

Why to Choose Cigati Outlook OST Reader

No Maintenance
No Maintenance

Cigati Outlook OST reader is a complete freeware and not a paid software. So no need to pay anything. You can just download it and use it to view, read and open OST files.

Open OST Files
Open OST Files

The OST viewer is one of the most advanced tools which not only helps you to view offline OST files which are healthy but also supports viewing of corrupt OST files even without Outlook

Preview Multiple Files
Preview Multiple Files

Free MS Outlook OST file viewer help users to preview multiple OST files with all its contents and other properties like: From, Subject, To, Sent, Got date and Size in bytes

Quick Scanning
Quick Scanning

The OST data viewer tool cum reader is loaded with one of the fastest scanning feature. Which lets it to scan some of the largest MS Exchange OST files without any hassle.

Simple GUI
Simple GUI

The software has been designed for both technical and non-technical users. The user-interface has been kept simple and easy to use.

High Compatibility
High Compatibility

Being an advanced application, it has been designed to remain compatible with all versions of MS Windows OS and Outlook versions.


  • Support viewing of all its contents like emails, contacts, notes, calendars, tasks, journals and other mailbox items.
  • Highly compatible with all versions of MS Outlook like Outlook 2003, XP, 2007, 2010, 2013 and 2016.

Product Specifications


Operating System

  • Windows 10, 8.1, 8, 7
  • Windows Vista
  • Windows XP
  • Windows 2000
  • Windows 98
  • Windows NT
  • Windows 95 &
  • Windows Server 2012

Microsoft Outlook

  • Outlook 2016,13,10,07,02
  • Outlook 2000
  • Outlook 98, 97
  • (both 32 bit and 64 bit)

Basic Requirements

  • Pentium Class Processor
  • 512 MB RAM (1GB Recommended)
  • 50 MB of free space
  • & Enough disk space to store recovered data


  • Single User: For Single / Personal Usage
  • Administrator: For Business / Corporate
  • Technician: For Business / Corporate / Technicians
Frequently Asked Questions
Yes, with the help of this application you can easily view and preview all your mailbox items like attachments and others.
Yes, off course. With the help of Cigati Offline OST data reader you can easily select and preview multiple .ost files at a single go.
Oh yes, the OST file viewer freeware support viewing of both healthy as well as corrupt Exchange OST file even without MS Outlook.
With the help of free OST viewer you can easily preview offline OST files which are either encrypted or protected by highly complex passwords or both.
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