Eraser

Eraser is an advanced security tool, which allows you to completely remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns. You can drag and drop files and folders to the on-demand eraser, use the convenient Explorer shell extension or use the integrated scheduler to program overwriting of unused disk space or, for example, browser cache files to happen regularly, at night, during your lunch break, at weekends or whenever you like.