File extension P7 is associated with XV Visual Schnauzer bitmap format.The Visual Schnauzer gives you a visual interface to the UNIX file system. It lets you view tiny 'thumbnail' representations of your image files, directories, and other files. It lets you create directories, rename files, move and copy files to different directories, delete files, view image files, view text files, and just generally nose around.
File extension P7 is associated with Elemica eSignature application.The Elemica eSignature application uses the .p7s extension on digital signatures created by signing invoices using the pkcs7 cryptographic message syntax standard. This is support of the EU Directive 2001/115/EC on electronic invoicing.