PeerBlock is a new version (aka a "fork") of the popular Peer Guardian 2 software. It blocks "known bad" computers from accessing yours, for example governments, corporate entities, and those flagged for anti-p2p activities. Peer Block maintains the functionality of the original Peer Guardian 2 program, but includes many fixes making it rock solid. PeerBlock now supports 64 bit enviroments.
This version is RC1 and does not require any activation. Just double click on exe. file and enjoy.