PeerBlock vs PeerGuardian

PeerBlock is a free, open-source program that blocks IP addresses and domains known to distribute threats like spyware, malware, and spam. It works by editing the Windows Hosts file to prevent connections to unsafe sites.

PeerGuardian is a free, open source software that blocks connections to malicious or undesirable IP addresses to help protect privacy while using P2P networks. It maintains a frequently updated blacklist to identify risks.