Calico Enterprise vs ZeroTier

Calico Enterprise is a self-managed platform for network security and observability in Kubernetes clusters. It provides pod-to-pod networking within single clusters and across multiple clusters, with data-plane options including eBPF, nftables, iptables, Windows, and VPP. Cluster mesh connects clusters for pod communication and service discovery, while supporting policy enforcement and traffic visibility. Security controls include network- and application-layer policies, DNS policies, egress controls, and workload microsegmentation. It also provides workload-level IDS/IPS, a workload-focused WAF, and DDoS detection and prevention. For observability, Calico combines flow logs with Kubernetes context and offers network topology views, dashboards, alerts, and workload packet capture. Tigera lists support for PCI DSS, HIPAA, GDPR, SOC 2, NIST, CCPA, and custom compliance frameworks, along with continuous monitoring and audit-ready reports. Policy deployment can integrate with CI/CD tools such as ArgoCD and Jenkins. The product supports hybrid deployment and centralized control, with BGP, IP-in-IP, VXLAN, WireGuard, TCP, UDP, SCTP, ICMP, ICMPv6, and HTTP listed as supported protocols.

ZeroTier is a software-defined networking platform for connecting people, devices and cloud environments through secure virtual networks. Its overlays can span public clouds, private data centers, on-premises environments, remote devices and edge systems. Security measures include cryptographic device identity, end-to-end traffic encryption, peer-to-peer connections when possible, and centrally defined policies enforced globally. Capabilities include cloud-to-cloud networking, global device fleets, identity-based access control, Layer 2 and Layer 3 networking, and programmable management. The platform supports hybrid deployment and lists coverage for DigitalOcean, Amazon Web Services, Google Compute Engine, Microsoft Azure, Oracle Cloud Infrastructure, Alibaba Cloud, IBM Cloud, Vultr and Equinix Metal. Documentation includes API guides and tutorials for Docker, code-server, Terraform, webhooks, and Prometheus/Grafana monitoring. The free Personal plan is limited to non-commercial use and includes 10 devices, one network and one admin. Essential costs $18 a month; Scale costs $179 a month. Platforms include Android, API, iOS, Linux, macOS, self-hosted, web and Windows.