This program will extract and convert worksheets to CSV even from damaged or corrupted Excel 2007 xlsx files. It succeeds at doing so where Excel 2007 itself fails to salvage data. The program is coded in Perl/Tk with a GUI interface.
This software is not reviewed yet.
Savvy Repair for Microsoft Office, tries four methods for repair or recovery from corruption of Word DOCX, Excel XLSX and PowerPoint PPTX files. Each method starts with the repair of the zip structure.