TestDisk is a powerful free data recovery program! It was primarily designed to help recover lost partitions and/or make non-booting disks bootable again when these symptoms are caused by faulty software, certain types of viruses or human error (such as accidentally deleting your Partition Table).

PhotoRec is a File Recovery program designed to recover lost files; including video, documents and archives from Hard Disks, CDRom and lost pictures from digital camera memory (thus, its Photo Recovery name). PhotoRec ignores the filesystem and goes after the underlying data, so it can still find files even if your media's filesystem has been severely damaged or re-formatted (overwritten data, of course, can not be recovered).

New file formats are supported:
adr Opera Hotlist
als Ableton Live Sets
amb Licom AlphaCAM
amd/amt/atd/att AlphaCAM
amr Adaptive Multi-Rate
arj Archive
arw Sony raw image,
asm Pro/ENGINEER Assembly
chm MS Windows HtmlHelp Data
dc TSCe Survey Controller DC v10.0
deb Debian Archive
drw Pro/ENGINEER Drawing
ds2 Digital Speech Standard v2
fcs Flow Cytometry Standard 3.0
f Fortran
fits NASA Flexible Image Transport System
frm Pro/ENGINEER Drawing Form
gho Ghost
gpg Partial support for GPG/OpenPGP file recovery
ics vcalendar
ifo DVD Video manager or title set
iso cd/dvd iso image (ISO0660)
kmy KMyMoney
m2ts Blu-ray MPEG-2
mcd VectorWorks
mfg Pro/ENGINEER Manufacturing
msf Mozilla mork database
pfx files holding PKCS#12 keys
prt Pro/ENGINEER Model
psp Paint Shop Pro Image File
SQLite databases
stl Stereolithography CAD
stp Standard for the Exchange of Product model data
tph Pro/ENGINEER ToolPath
veg Sony Vegas
wdb Microsoft Works Database
wks Lotus 1-2-3
Load and save FileOpts settings: remember which file types to recover
For JPEG files, extract the time/date from Exif header and set the file time
License: Freeware
Requires: Win 2K/03/XP/Vista
Size: 1.48 MB