Grouper is a Windows based application that allows users to share their personal media within private groups. Grouper uses P2P technology connecting you directly to your friends’ hard drives where you can share large files in an encrypted environment. Grouper requires no firewall reconfiguration. See http://www.grouper.com (http://www.grouper.com/). Windows may refer to: the architectural feature (for seeing out of buildings); see window a concept in computer graphical user interfaces; see window (computing) the computer operating system, Microsoft Windows the 1981 movie, Windows This is a disambiguation page — a navigational aid which lists other pages that might otherwise share... The acronym P2P has the following main meanings: Peer-to-peer (communication, network, etc) point-to-point(communication, network, etc) Person to Person. ... This article is about algorithms for encryption and decryption. ... In computing, a firewall is a piece of hardware or software which functions in a networked environment to prevent some communications forbidden by the security policy, analogous to the function of firewalls in building construction. ...