Free OST to PST - Version 3.3 Conversion exchange OST to PST software restore Outlook OST files without deleting any others OST files and see complete data read data from OST file. and this tool install on windows operating system and work as a third part tool and it work like interface in between Exchange server and Outlook it first accept data from Exchange server and repair it then save into Outlook PST file. for the user satisfaction company give many demo version software and give complete information on given site for this reading user can make easier to use this tool and know that how is use this tool. If user get full satisfy then go on given link and purchase full version software only $99. For more info: - http://www.exchangeostrecovery.net/