This free OST reader tool is an ideal OST viewer utility that resolves the issue of accessing OST contents. Using this OST file reader tool, you do not require establishing a connection with MS Exchange Server. Exchange OST reader quickly scans the OST file and displays its emails, notes, contacts, calendar items in the respective folders. Using OST reader tool is quite easy, as it provides step-by-step instructions to view OST contents. All you have to do is select the OST file and click OK. This OST file reader tool will scan the selected file and display the email items in a tree-like structure. Navigate through the folders and view the desired emails, contacts etc. OST viewer supports viewing OST file created using all versions of MS Outlook such as MS Outlook 97, Outlook 2000, Outlook XP, Outlook 2003, Outlook 2007, and Outlook 2010, MS Outlook Express 4.0 and above, and MS Exchange Server 5.0, 5.5, 2000, 2003, 2007, and 2010. OST reader tool can be installed on Windows 2000, Windows XP, Windows 2003, Windows Vista, and Windows 7 operating systems to open OST file.