Kernel for OST is a perfect ost to pst conversion software which helps to perform secure outlook to ost migration. User mailbox items saved in offline storage files of MS Exchange Server 2007, 2003, 5.5, and 5.0 are successfully migrated to MS Outlook 2007, 2003, 2000, 98, and 97. Emails, contacts, images, attachments, Unicode characters, text formatting, email properties etc are saved to new outlook pst files to access with MS Outlook. Software also recovers permanently deleted emails from deleted items folder of the user mailbox, thus it also performs the function of ost recovery. Exchange OST files are created by the user at the time of exchange downtime, inaccessibility of user mailboxes, improper exchange server functioning. Items from these .ost files are exported to .pst files which are then mounted with the user mailbox for continued exchange performance. Free evaluation software of Kernel for OST is available to its users free of cost. This demo software provides an overview of the software working and features before purchasing the full version software. Runs smoothly on Windows Vista, XP, 2003, 2002, and 2000.