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Tools linked from our file type guides
Software Store

Software Store for File Tools

Some file jobs need more than a manual step. This store lists the viewers, repair tools and converters we link to from our guides, with a note on what every tool opens.

Tool names and links checked in October 2026 Updated October 26, 2026
15tools listed
6free mailbox viewers
6repair and recovery tools
3converter and viewer tools
Free viewers

Free Mailbox and Message Viewers

Open the file first. Read the messages and check the contents before you decide to repair or convert anything.

Free viewer

Free MBOX Viewer Tool

Opens MBOX mailbox files so you can read the messages.

Free viewer

FreeViewer PST File Viewer Tool

Opens Outlook PST data files so you can read the mailbox items.

Free viewer

FreeViewer OST Viewer Tool

Opens Outlook OST files so you can read the mailbox items.

Free viewer

FreeViewer MSG Viewer Tool

Opens MSG message files saved from Outlook.

Free viewer

Free EML Viewer Tool

Opens EML email files so you can read the message and its attachments.

Free viewer

Free OLK Viewer Tool

Opens OLK files so you can read the items inside.

Repair and recovery

Repair Tools for Damaged Files

Use these when a file will not open and the manual checks in our guides did not fix it.

Recovery tool

SysTools Outlook Recovery Tool

Restores mailbox items from a damaged PST file.

Recovery tool

SysTools Exchange Recovery Tool

Scans corrupt Exchange EDB files and recovers the mailbox items.

Recovery tool

SysTools SQL Recovery Tool

Fixes damaged SQL Server primary and secondary data files and moves the recovered data into a live database or a script.

Recovery tool

SysTools Access Database Recovery

Recovers data from damaged Microsoft Access database files.

Recovery tool

SysTools BKF Recovery Tool

Scans, repairs and extracts data from corrupt BKF backup files made by NTBackup and Symantec VERITAS Backup Exec.

Recovery tool

SysTools SQLite Database Recovery

Scans damaged SQLite database files and exports the records to SQLite, MS Access, PDF or CSV.

Convert and examine

Converter and Viewer Tools

Move mailbox data into another format or examine an evidence image.

Converter tool

SysTools PST File Converter Tool

Converts Outlook PST files into other formats. The free demo limits exports to 25 items per folder on Windows.

Converter tool

SysTools OST Converter Tool

Converts Microsoft Outlook OST files into other formats.

Converter tool

SysTools E01 Viewer Tool

Examines the data inside EnCase E01 evidence files.

Before you buy

How to Choose the Right Tool

1

Match the Tool to the File Type

Check the extension first. Our file extension library names the format and links to a guide for it.

2

Work on a Copy

Copy the damaged file and use the copy. The original stays safe if a repair does not work.

3

Read the Price and Limits

Open the tool page and read the price, the trial limits and the system needs before you pay.

Good to know. Tool links open the maker's own site, so prices, trial limits and terms belong to SysTools and FreeViewer and can change. Read the Software Suggestion Policy in our Terms and Conditions and browse the file extension library to find your file type first.
Quick answers

Software Store Questions Answered

Are the tools in the Software Store free?

The mailbox viewers on FreeViewer are free to use. SysTools tools have their own prices and trial limits, so read the tool page before you buy.

Does WhatIsFileExtension sell the software?

No. Every tool link opens the maker's own site, where you can read the price and download or buy the tool.

How do you choose which tools to list?

A tool earns a link when one of our guides shows a job that a manual step cannot finish, like repairing a damaged PST file.

Is it safe to use a repair tool on your only copy of a file?

Make a copy first and work on the copy. That keeps the original safe if the repair does not go the way you expect.

Need a Tool We Do Not List?

Send our team the file type you are stuck with and we will look into it for the library.