Kernel OST Viewer - It’s free

Kernel OST Viewer

Opens healthy & corrupted OST files without MS Outlook

  • Opens OST files without Exchange account/MS Outlook
  • Displays emails, attachments, Deleted Items, Calendar, Contacts, etc
  • Works with healthy & corrupted OST files
  • Allows to copy & print email list in HTML Format
  • Creates a comprehensive file analysis report to analyze OST data
  • Owns user-friendly Graphical user interface
  • Compatible with all Exchange and Outlook versions.
  • Can be installed on all Windows workstations
  • Is completely FREE for all users


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 (22)

1 2 3 > Last
Full StarFull StarFull StarFull StarFull Star
Raimund says...
The feature of detailed analysis report in graphical format is amazing, I could calculate all the statistics of the data that was saved in the OST file I saved a few months back on my local machine.
13th April 2018 1:52pm
Full StarFull StarFull StarFull StarFull Star
Jeter says...
It is a finest third-party tool which makes my OST files accessible without Outlook. A big thank you to the team.
3rd April 2018 2:01pm
Full StarFull StarFull StarFull StarEmpty Star
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
Full StarFull StarFull StarFull StarFull Star
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
Full StarFull StarFull StarFull StarFull Star
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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