Recoveryfix OST Viewer is a reliable tool designed to open and view OST files without requiring Microsoft Outlook. It allows users to access emails, attachments, contacts, calendars, and other mailbox items safely. The OST Viewer software supports all versions of OST files and ensures accurate data preview. With its user-friendly interface, users can efficiently examine OST data and export it to multiple formats like PST, EML, MSG, or HTML.