One of the reasons that you may need to purchase Microsoft Office, and exclusively use Office applications, as opposed to the many available free similar programs, is that many data recovery tools are incompatible with the others. Even if you have saved a file using a Microsoft file extensions such as a DOC or XLS, the structure within that file may not be identical to a file created on Microsoft Office. Because of this, data recovery tools designed for Microsoft Office file recovery often come up short in attempts to recover deleted Word document files.
For this reason it is recommended one use the free trial version of any data recovery tool before making a purchase. By using the free trial version you are given the opportunity to make sure your lost data can be found and subsequently successfully saved. One of the best data recovery software companies offering free trial versions is Remo Software. They have available programs for Microsoft Office file recovery as well as specialized data recovery tools.