DiskSpy is used to view single hard disk sectors and offers access to every sector of a hard disk drive. It has special features like text and pattern search, 8-, 16- and 32-bit display modes as well as big- and little-endian notation.
The Free Edition of HDClone is the ideal tool for moving or cloning contents of entire hard disks on larger ones. Since it works on a physical level it can be used with any operating system and any filesystem.
PCISniffer performs a complete PCI-diagnosis. It reports device and vendor names as well as other PCI device information in plain text. This information can also be transmitted over a serial port. ISO image for making a bootable CD included.