.PST File Overview

File Extension: PST
File Type Description: Outlook Personal Information Store File
File Type Developer: Microsoft Corporation
Primary Associated Software: Microsoft Outlook Express
Primary Software Developer: Microsoft Corporation

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What is File Extension PST?

Outlook Personal Information Store File files were originally developed by Microsoft Corporation for the Microsoft Outlook 2016 software application. User statistics infer that these PST files are popular with users from United States and most frequently found on the Windows 10 platform. A high percentage of these users browse the web using Google Chrome.

Top PST User Languages

Top PST File User Browsers

Desktop Friendly?


Mobile Friendly?


Most Popular PST File Countries

Top User Operating Systems

Windows 10 Windows 11 Windows 6 Windows 8.1

Associated Operating Systems

Windows Phone

Other File Types Related to PST Files

Extension File Type Developer File Category File Type Description
.DZI Microsoft Corporation Raster Image Files PhotoSynth Deep Zoom Image File
.MDK Microsoft Corporation Text Files Madoko Document File
.3TH Microsoft Corporation Settings Files 3D Movie Maker Thumbnail Data File
.PSESS Microsoft Corporation Developer Files Microsoft Visual Studio Performance Session
.GEM RubyGems.org Developer Files RubyGems Package
.PYV Microsoft Corporation Audio Files Microsoft PlayReady Video
.PJX Microsoft Corporation Developer Files Visual FoxPro Project
.AX Open Source Plugin Files DirectShow Filter
.IMESX Microsoft Corporation Settings Files Microsoft Office IME Search Provider Definition File
.CB Microsoft Corporation System Files Microsoft Clean Boot File

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