Brings into one place MS methods for recovering files that won't open
Makes easy MS recommended Excel recovery methods - adds 5 of its own.
Repairs/Recovers Corrupt MS Office 2007 - 2013 Format Files
Open corrupt Word DOCX files and possibly recover formatting too.
Recover unopenable corrupt Open Office files or salvage the text.
Extract text from corrupt DOCX files where Word itself fails.
Perl based utility to extract formatted text content from MS Docx file
Open Source Freeware Directory Script
Add-In gathers MS recommended ways for uncorrupting Excel files.