Here’s a directory.
http://en.wikipedia.org/wiki/Comparison_of_S.M.A.R.T._tools
here’s a pre-installed part of a certain Linux distro:
http://en.wikipedia.org/wiki/Palimpsest_Disk_Utility
here’s something else interesting
http://www.cgsecurity.org/wiki/TestDisk
http://www.cgsecurity.org/wiki/Main_Page
TO BE CONTINUED . . . .