pfSense is an open-source firewall and router software based on FreeBSD. It provides advanced features and flexibility for network security and routing.
Free (Community Edition), Paid support options available
Best ZeroShell Alternatives ranked by AI · updated May 2025
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ZeroShell is a Linux-based firewall and router software with advanced features such as load balancing, VPN, and captive portal.
Price: Free
🎯 zeroshell.org
Top 6 ZeroShell alternatives
OPNsense is an open-source firewall and router platform based on FreeBSD, administered through a web interface. It is aimed at network administrators...
Pros
- Offers a far richer web interface than Advanced Policy Firewall
- Includes VPN, routing, reporting, plugins, and intrusion-prevention features
- Well suited to dedicated perimeter firewalls and small business networks
Cons
- Runs as a separate firewall appliance rather than a lightweight Linux host tool
- Requires dedicated hardware or a virtual machine
- More resource-intensive than Advanced Policy Firewall
Free; paid support and hardware available
Untangle is a comprehensive network security solution that provides firewall, web filtering, and other security features.
Starting at $50 per month
CacheGuard-OS is an operating system that offers web security and optimization features.
Free trial available; Contact vendor for pricing
NxFilter is a comprehensive web filtering and monitoring solution that helps organizations to control internet usage and improve network security.
Free for basic features, paid plans available for advanced features
Kerio Control is a unified threat management solution that provides network protection and intelligence to small and medium-sized businesses.
Starting at $265 for 5 users
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