OST Converter to PST - Version 4.3 OST Converter to PST software is a simple tool that convert OST to PST file. If you are looking for a freeware that will convert OST to PST file format quickly and easily, OST to PST is what you need. After a couple of clicks, you will be able to open the converted PST file in Outlook. Our OST converter is a useful utility if, Microsoft Exchange Server data need to be moved and opened in Microsoft Outlook. This free converter is able to do it simply and easily. Convert files in a couple of clicks, select an OST file and choose the location where you want to save the PST file. OST2PST will automatically connect the converted files to Outlook, so you would not need to import .PST files manually. When your data became corrupted or damaged by some critical problems as Virus attack, Trojan infection, system shutdown automatically, low network connectivity etc. then our software OST Converter to PST has solution to recover your damaged data and saves them to OST to PST, OST to MSG and OST to EML formats. Recover OST to PST application management tool supports all Windows versions like 95,