OST to PST Free Converter - Version 3.6 OST to PST Free Converter is the best option to freeware repair corrupt or inaccessible OST file as well as converting .OST database file to .PST, .MSG, .EML files for Outlook user at Server down time. OST to PST Freeware Converter solution is the a most excellent Outlook emails recovery tools, use to easily recover orphan OST data from Exchange Server to move easily OST to PST files. The OST to PST Shareware solution runs on all Windows OS like Win-7/Windows Vista / 2003 / 2000 / XP as well as supporting Microsoft Exchange Server 2010, 2007, 2003, 2000, 5.5 and 5.0. This software has an excellent feature to easily repair inaccessible OST file and easily convert them into three different files like PST, EML and MSG file format. After satisfaction of demo version you want to purchase full version then pay only $99.