If you are looking Exchange OST recovery tool then you should try Data recovery solutions Exchange ost recovery software tool. This OST recovery offers recovery of all items of Outlook data like tasks, emails, calendar, contacts etc. It is capable to repair OST file and recover its data from severaly corrupted OST file and move them to accessible PST.
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OST to PST Converter Free Tool is a useful tool, which has the easiest to transfer OST files to Outlook PST formats. It supports all MS Outlook version:- 2000, 2002, 2003, 2008, 2010, 2013, 2016 and latest 2019. This tool is very helpful and safe. The software offers users the flexibility to transfer data from any version of Outlook. This tool is very helpful and 100% safe and secure in the database and transfer is very fast.

More info:- http://www.softknoll.com/ost-to-pst-converter/