portable file shredder
WipeDisk - Portable File Deletion Tool
WipeDisk is a small portable secure file deletion tool. It can be used to securely wipe both logical and physical hard disks, USB flash memory sticks and micro sd cards. Supporting 14 unique wiping methods, this tool should ensure that your wiped or deleted data is securely shredded and no longer recoverable.
DPWiper Portable Secure File Deletion
DPWiper is a small portable file shredder utility that allows a user to securely delete or Wipe both files and folder securely via Drag & Drop. With it, a user can delete files normally (not secure), utilize a Single overwrite by performing a DoD Wipe (US Department of Defense of Defense 5220.22 compliant wipe) or use the Gutmann's Maximum Security 35 pass wiping method.
UltraShredder - Portable File Shredder
UltraShredder is a Portable application that allows a user to Securely Delete or Shred files. It does this by overwriting the information with random characters. If an attempt is made to recover the file or files that have been shredded using a data recovery program, only illegible information would be seen in place of the file.