Kernel OST Viewer

Kernel OST Viewer - It’s free

Open and View OST files without outlook

Kernel OST Viewer Features:
  • Search or Filter specific OST items
  • Open healthy as well as corrupted OST files
  • Generate various types of reports including Mail flow, Item Types, Interaction between users etc
  • View and open the attachments
  • Copy and print TXT and HTML emails efficiently
  • It supports MS Exchange Server 2016 , 2013 ,2010, 2007, 2003, 2000, 5.5 and 5.0
  • It supports Microsoft® Outlook 2016, 2013, 2010, 2007 and 2003 ( Both 64 and 32 bits )

Kernel OST Converter

Recover OST data and Convert to various formats

Kernel OST Converter features:
  • Convert OST files to PST - ( No OST file size limitation )
  • Save Individual folders as well as specific items
  • Save OST data to PST, DBX, MSG, EML, TXT, RTF, HTML, MHTML, MBOX and PDF files
  • Export OST data to Office 365
  • Export OST data to , MS Exchange Server, Novell GroupWise, and Lotus Domino
  • Export OST Data to Google Apps, Gmail, iCloud, Yahoo, AOL, and
See Pricing


Simple steps to view OST files without MS Outlook

The Free OST Viewer has an easy-to-use & interactive GUI that helps in opening OST files much easier.


  • When the software is launched, the Select Source OST File dialog box appears and prompts to browse the OST file that one wants to open.
  • Then, select the OST file and click the OK button (use the Search option to get the location of OST files in a drive).
  • After clicking the OK button, the utility starts scanning the selected file.
  • On the successful completion of the scanning procedure, the software displays the email items in a tree-like structure in the left panel.
  • User can navigate through the folders listed in the left panel to view the desired emails, Contacts, Calendar Items, Sent Items, and so on.
  • To save the OST email list, click Save list information to HTML file button.
  • To generate OST File Analysis Reports, click the reqired report type on the righrt pane. Then select the required folders and click Analyse. The OST file Analysis Report will be generated instantly.


Features of Kernel OST Viewer Free Tool
Access OST files without Exchange Server

OST Viewer tool allows access to Exchange Offline folders file (OST) without establishing a connection with MS Exchange Server. The tool scans OST file and displays its entire content including emails, calendar items, notes, contacts, etc.

Copy and Print emails

OST Viewer tool not just makes healthy or corrupt OST files accessible without Exchange Server, but allows you to copy and print emails in TXT and HTML formats also. The tool also provides access to email attachments in a single click.

Opens all kinds of OST files

OST Viewer tool is capable of opening healthy as well as corrupt OST files. The tool is even capable of opening password-protected OST files with equal ease even if the password is not known to you.

Generates file analysis report

Free OST Viewer tool creates an inclusive report having details of all item types such as emails, contacts, email flow density as per sender or data, notes etc. It helps you analyze the OST file data.

Easy to operate

Kernel OST Viewer carries an interactive and user-friendly Graphical User Interface (GUI) which make it quit easy to operate. All its features are self-explained. Any kind of assistance is not required to operate the software.

High software compatibility

Kernel OST Viewer Free tool extends support for all versions of MS Exchange Server (2016, 2013, 2010, 2007, 2003, 2000, 5.5, and 5.0), MS Outlook (2016, 2013, 2010, 2007, 2003, 2002, 2000, 98, and 97) and Windows OS (10, 8.1, 8, 7, Vista, XP, 2000, 98, NT, and 95).

Process to View OST File

Kernel OST Viewer is coded with easy-to-select features that helps in accomplishing the job of previewing the OST files. This portable software runs exhaustively while securing the crucial OST email properties, structure, and formatting. View the following snapshots:

Locate and attach the required Outlook OST file to fetch preview.

Locate Outlook OST file

Unified preview of Outlook OST folders and files.

Preview of Outlook OST folders and files

Visual reports on “Total item types” for the selected OST folder.

Visual reports for selected OST folder

Review (20)

1 2 3 > Last
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Odilio says...
I had some ost files, and I could not access its data as I didn’t have Outlook. I was looking for a reliable tool, and I found this. It’s amazing and free tool.
19th March 2018 7:38pm
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Dedrick says...
OST Viewer is a free tool offered that is fully capable of opening OST file content. This tool helped me open healthy OST files as well as the corrupt ones. I couldn’t believe at first when I saw my most crucial data in front of my eyes. I owe a big thank you to OST Viewer tool and team members.
9th March 2018 6:56pm
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Ottocar says...
The utility is designed with a fabulous GUI. It requires no external help or assistance to operate the software.
28th February 2018 8:30pm
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Sinclair says...
In the absence of Outlook platform, if you want to access any OST email or its attachment, then use the OST viewer. It is completely free and can open an unlimited number of OST mailboxes easily.
23rd February 2018 3:15pm
Full StarFull StarFull StarFull StarEmpty Star
Searle says...
The OST viewer tool is the finest tool which I used to see the content of a corrupt OST file. It was not opening in the Outlook, and I needed to access some important emails from my clients. Thanks to the tool I got the email data quickly.
16th February 2018 3:49pm
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