TestDisk & Photorec
Recover files and partitions on many filesystems.
See http://cgsecurity.org page by Christophe Grenier,
Both TestDisk and PhotoRec are pre-compiled static programs with no dependencies.
These are packaged and setup for Puppy.
Use the sfs or pet versions on linux kernel 2.6 based 32 or 64 bit systems.
Menu items are under Utilities. Docs are linked from /root/my-applications/