For most people, deleted files are like zombies: they’re not really dead. A simple Internet search will direct you to programs (mostly Windows-based) that can retrieve them. That’s bad news if you have sensitive files you never want coming back from the grave. And that goes double for the majority of consumers who don’t have encryption on their hard drives. For added peace of mind, these programs—one Mac- and the other PC-based—will tear your tax returns and other private information apart like a paper shredder, making sure no one ever lays eyes on them again.
For a piece of freeware that does something so irreversible, File Shredder has a surprisingly friendly interface. Most of the main screen is blank until you add files and folders. Best of all, the program makes it easy to review files before you shred them, and even remove them from the list if you have a sudden change of heart.
Free (Trial), $24.95 (Full);
ShredIt, a cross-platform shredder and hard drive cleaner, is such a trustworthy choice that Apple endorses it on its downloads page. The software is free as a trial, but this will only let you poke around the interface, deleting—but not shredding—files. Upgrading costs a one-time fee of $24.95. ShredIt presents a dialog box asking you to confirm whether you want to shred files. However, unlike File Shredder, the program doesn’t give you a chance to review the files in list form.