Free OST PST Viewer tool for Outlook

The perfect solution to access Outlook OST and PST file content. View multiple PST and OST files in a few clicks.

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OST PST Viewer Customer Reviews

Average Rating: 4.8/5 - 295 reviews

“ "I was very frustrated with accessing pst files using Outlook. Outlook's instructions are confusing and can cause all kinds of problems if not done right. Hours and hours of wasted time. What a relief to be able to view PST files with OST PST Viewer without using Outlook." ”

james j.

About OST PST Viewer

OST PST Viewer is a free* software designed to view PST and OST files in a few clicks without Microsoft Outlook. Open PST and orphaned OST Outlook files. Search and export contacts, calendar, and email folder content to PST and other file formats.

*OST PST Viewer free version has limited features. Advanced search, exporting files, copying text, saving attachments, and printing features are available only with Pro version of OST PST Viewer.

Do more with our free OST PST Viewer tool for Outlook

OST PST Viewer is the smart choice to open or access specific information from Outlook PST files, even without Outlook installed.

Open OST and PST files quickly without Microsoft Outlook

OST PST Viewer is an application that allows you to view PST files without Outlook by using an Outlook-type interface. Open Outlook OST and PST content such as emails, contacts, calendars, tasks, journals and notes. Access Outlook data when Outlook is not installed, is unresponsive or fails to open at all.

Access folder content

Find and extract information stored in connected or orphaned Outlook data files. Access data from your Inbox, Sent, Drafts and other folders in the same way as seen in Outlook. Open OST and PST files of up to 50 GB in size.

Open password protected files

If you have a password protected Outook files, OST PST Viewer can also assist with opening these. Open your locked files to ensure you never lose important data.

Export and move Outlook data

Export emails, attachments, events, contacts, tasks and notes stored in PST and OST data files with ease. Move entire folders within the files or selected text. Export emails to .msg and .mth files; Contacts to .vcf or .vCard files; and Calendar events to .ics or iCal files.

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See how to open PST files with OST PST Viewer

Just follow these simple steps:

Download, install and launch OST PST Viewer on your PC;
To add a file to OST PST Viewer, go to the "File" tab and click "Open";
Choose the PST or OST file you would like to open;
You can now easily explore your PST or OST file content without Outlook.

About 4Team Corporation,

the company behind OST PST Viewer

We are a Microsoft Gold Certified Partner and independent software developer and vendor. Since 1999, we have provided business solutions to our corporate customers and individual end-users worldwide. We are very proud to be highly recommended by our satisfied customers and offer award-winning support.