PeerGuardian 2 is Phoenix Labs’ premier IP blocker for Windows. PeerGuardian 2 integrates support for multiple lists, list editing, automatic updates, and blocking all of IPv4 (TCP, UDP, ICMP, etc), making it the safest and easiest way to protect your privacy on P2P.

Version	2.0 Beta 6C
Operating System Support	Windows 10, Windows 2003, Windows XP, Windows 98, Windows 2000
Current Language	English
Available Languages	English, French, Polish, Chinese, Italian, German, Japanese, Spanish
License	Free
Date	Thursday, February 15th 2007
Developer	Phoenix Labs
Developer URL	https://www.phoenixlabs.org

PeerGuardian 2 is Open Source, meaning the program code is available online for anyone who wants it. Not only does this allow you to make modifications or even branch off into your own project, but it encourages peer review of the code making sure any bugs are eliminated swiftly. Because PeerGuardian 2 is Open Source, you can rest assured there are no backdoors or spyware included.

Development of this title has been discontinued by the original authors, but has been continued by a new team under the name of PeerBlock.