PacketFence is described as 'Free and Open Source network access control (NAC) system. PacketFence is actively maintained and has been deployed in numerous large-scale institutions over the past years. It can be used to effectively secure networks - from small to very large heterogeneous' and is a Firewall in the security & privacy category. There are seven alternatives to PacketFence for a variety of platforms, including Windows, Mac, Web-based, iPhone and Self-Hosted apps. The best PacketFence alternative is Sophos Endpoint Protection. It's not free, so if you're looking for a free alternative, you could try openNAC or Palo Alto Networks Applipedia. Other great apps like PacketFence are Check Point Endpoint Security, ThingsPage, Procera Networks and Cisco NAC Appliance.