It's just the recovery software you were thinking of. In addition to Windows those programs do exist for other platforms also, including Linux. So hop on, do a web search and download one you like. Note: many/most of them are something you're supposed to pay for, and probably just show you "I
could retrieve these files, if you paid $200". But there are some free pieces also, so go on
If it's not crucial, you probably don't want to pay a lot for it, so try to search the free programs.