photorec
foremost
exiftool lib-exiftool-perl
exiftool --list filename.ext
http://www.makeuseof.com/tag/the-best-ways-to-recover-data-on-linux/
http://lifehacker.com/5926254/safecopy-recovers-data-from-hard-drives-and-other-media-keeps-working-when-other-tools-give-up
http://www.youtube.com/watch?v=EncqYP1ijFg
http://www.smashingapps.com/2008/03/16/with-undelete-plus-a-free-file-recovery-software-retrieve-intentionally-or-accidentally-deleted-files.html
http://www.dedoimedo.com/computers/linux-data-recovery.html
http://www.smashingapps.com/2011/02/25/eight-great-tools-windows-users-would-never-want-to-miss.html
http://www.smashingapps.com/2011/08/11/5-must-have-file-recovery-tools-for-linux-users.html
http://www.linux.org/threads/undelete-files-on-linux-systems.4316/