Pen Drive File Retrieval Software
This software can recover images, audio, video, and other files from a corrupted pen drive. It also restores data lost due to accidental formatting of a USB thumb drive.
Free Recovery 
Digital Camera Photo Rescue Utility
The digital camera picture retrieval tool can recover lost or corrupted pictures in various file formats such as JPEG, AVI, GIF, BMP, and PNG. It can also rescue deleted photographs and unformat formatted smart media and corrupted memory cards.