2 Open Source Alternatives to Sophos Firewall
A list of 2 carefully selected open-source alternatives to Sophos Firewall.

The open-source alternatives are ranked based on our custom ranking system and score. This system takes into account various factors to determine the best alternatives.
If you’re looking for alternative features or workflows, here is a prepared detailed list of Sophos Firewall open-source alternatives — each with its own distinctive strengths and key features.
pfSense is a free, open source customized distribution of FreeBSD designed for use as a robust firewall and router. It offers enterprise-level network security, VPN, and routing functionality while being managed via a user-friendly web interface, making it an ideal solution for environments ranging from home networks to enterprise infrastructures.

Key Features
- Open source, customizable firewall and router platform
- Intuitive web interface for easy management
- Expandable via a comprehensive package system
- Flexible deployment options: appliance, cloud, and software
- Backed by a vibrant community and professional support
- Cost-effective security and networking solution
pfSense software delivers a comprehensive security platform that seamlessly integrates firewall, VPN, and routing capabilities into one solution. It supports flexible deployments including on-premises appliances, cloud-based virtual machines on AWS and Azure, and white box hardware. With an extensive package system for add-on features and strong support options, pfSense meets the demands of businesses, government agencies, educational institutions, and more.
OPNsense is a sophisticated open source firewall and routing platform offering a user-friendly GUI coupled with robust API capabilities. It is engineered to meet diverse networking needs with a strong focus on performance, security, and streamlined management.

Key Features
- User-friendly GUI for simplified system management
- Advanced API for seamless automation and integration
- Comprehensive security controls, including firewall, routing, and VPN
- Community-driven development with regular updates
- Transparent roadmap for continuous improvement
OPNsense provides an integrated solution for managing firewalls, routing, and VPN services through an intuitive interface and powerful API. Its comprehensive security controls and flexible customization options suit environments ranging from small offices to large enterprises. The tool benefits from community-driven development, regular updates, and a transparent roadmap, ensuring a reliable and future-proof systems backend.
Price comparison of Sophos Firewall open-source alternatives
Tool | Tier 1 | Tier 2 | Tier 3 | Details |
---|---|---|---|---|
![]() | $189 Netgate Appliance | $0.01 Cloud | $129 Software | Learn more |
* Pricing shown is based on publicly available information and may not reflect current rates. Visit each tool's website for detailed pricing information and additional tiers.