Enstella best OST 2 PST Freeware software easily works on your corrupt OST file and smoothly repair corrupt OST file & recover OST to PST free. Best OST 2 PST converter freeware software convert OST file to PST/EML/MSG/HTML file with all folders- Emails items, Journals, Tasks, Calendars, Notes, and Contacts in least time. OST 2 PST conversion program works on all OST file versions-5.0/5.5/2000/2003/2007 to 2013.