OST to PST tool is available for free download, which helps you analyze the tool capabilities free of cost. Download and install the software to know how worthy it is for you. The free trial version has a limitation i.e. it only displays a preview of the items stored in OST files, but does not allow to save more than 25 email files in PST or various other formats.
Versions SupportedMicrosoft Exchange 2016, 2013 , 2010, 2007, 2003, 2000, 5.5, and 5.
System Requirements for Installation Support
Operating System: Windows 10, 8.1, 8, 7, Vista, XP, 2000, 98, NT, 95 and Windows Server 2012, 2008 R2, 2008, 2003 R2, 2003
Minimum Memory Requirement - Minimum 64MB RAM (128 MB recommended)
Disk Space Requirement - 50 MB of Free Space.