You can open an OST file without MS outlook. Use the Aryson OST viewer tool. This tool helps to open, view, and read OST files and also allow you to save OST file in different documents DOC, HTML, and Converts. It saves the OST files into other file formats like EML, EMLX, MBOX, and EMLX. It previews the OST file with attachments. It also helps to read and open OST files without exchanging server environments. Moreover, it is compatible with all the versions of the exchange server and MS Outlook.
If you are facing problem in open or view the then you can try to repair those OST file and create a new one from it or save it as other file format like PST, EML, MBOX, etc. You can download the OST to PST Converter to perform this task simply and make you data accessible.
You can use MailsDaddy OST file Viewer tool to open and view OST files with all the attachments without installing Outlook or exchange server. It’s supports all versions of MS Outlook ,both technical / non-technical persons are able to use it . As well as the OST viewer is also capable to fetch all contacts and preview with item counts.