Free OST2PST converter application is one such tool for converting OST to PST free. This Free OST2PST converter application to convert OST files to EML, MSG & other formats with the help of few clicks. Free OST2PST converter software to restore OST emails, contacts, tasks, notes, calendar, journal, appointments, etc. This software recovers all OST mail messages such as calendar, task, notes, journal, folders and appointments etc.