Alternatives to Zscaler Cloud Firewall

OPNsense

Community Edition may suit users seeking a self-hosted firewall and routing platform on x86-64.

NG Firewall suits organizations seeking network security and management capabilities across hybrid deployments.

NethSecurity

NethSecurity is aimed at small and medium-sized businesses needing firewall, traffic management, threat protection, and VPN capabilities.

Cato SASE Platform suits organizations seeking networking, security, and private-application access in one cloud-based platform.

OpenWrt suits users who want to customize embedded devices such as wireless routers and are familiar with GNU/Linux and basic networking concepts.

TNSR may suit businesses, ISPs, internet telephone providers, hosting providers, managed service providers, and SaaS providers with routing or VPN workloads.

Oracle Cloud Infrastructure Secret Management

OCI Secret Management is aimed at application and cloud environment operators who need centrally managed credentials.

pfSense may suit home and remote workers, businesses, government, education, and service providers.

Forcepoint Next Generation Firewall

It is aimed at large enterprises, campus networks, data centers, offices, branches, remote sites, and stores.

It suits organizations managing Juniper SRX environments across on-premises, cloud, or hybrid infrastructure.