PassFab for Excel - Recover Excel password and worksheet protection.
Kon-Boot - Kon-Boot is a password hacking, password recovery tool for Windows and Mac.
Office Recovery - Data recovery software for corrupted email, databases, office productivity applications and media. Dozens of supported formats include Microsoft Office, SQL Server and Exchange Server files. Free demo downloads.
hashcat - The World's Fastest CPU/GPU powered password cracker.
SysTools Powerpoint Recovery - SysTools PPTX file recovery tool allow users to recover multiple PPTX files in one go. With the help of 3 recovery modes, it’s very easy to restore as well as repair PowerPoint files. Also, compatibility and robustness make this software reliable.
Tenorshare Windows Password Recovery - Forgot your Windows login password?