Open Source C++ Data Wipe Software for Windows

Eraser is a secure data removal tool for Windows. It completely removes sensitive data from your hard drive by overwriting it several times with carefully selected patterns.

Simple program intended to delete and remove stubborn directories and files that cannot be removed by other means either because the path is too long, the name is invalid, or any of other errors that can be incurred upon file or directory deletion. For a lightweight, no installation necessary version of FilExile, try FilExile Portable! https://sourceforge.net/projects/filexileport.filexile.p/

BitKiller securely shreds files and directories, removing them completely from your hard disk. It can quickly and efficiently overwrite files using anything from random data to the Gutmann method. It also changes filenames to make them harder to find. No setup or installation needed.

A secure disk wipe tool based on VeraCrypt encryption engine. Release archives are signed using PGP key with fingerprint 607E5A7AD030D38E5E5C2CA502C30AE90FAE4A6F belonging to Mounir IDRASSI and which can be found on major key servers (e.g.. https://keys.openpgp.org/vks/v1/by-fingerprint/607E5A7AD030D38E5E5C2CA502C30AE90FAE4A6F).