Data Destroyer 

A program for secure file deletion and disk wipe which destroys (by overwriting) data in multiple files and multiple folders on floppy, ZIP or hard disk so that the data cannot be recovered. Single-file or batch-mode operation.
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Deletor 

Deletor helps you keep your disks clean by deleting or shredding files that meet your conditions. Files can be filtered by name, time or attributes. Command line access is included to automate cleaning with batch files, shortcuts or a scheduler.
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Mutilate File Wiper 

Mutilate File Wiper is an easy to use file eraser that shreds sensitive files so they cannot be recovered or undeleted. For additional security, Mutilate's disk free space wiper will destroy previously deleted files on your hard drive.
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Delete Doctor 

Delete files that are difficult to delete, such as some files left by viruses and trojans, or files with corrupted file names. This program can also delete files like the "index.dat" files, which store Internet history.
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