Edgeless Systems Constellation vs k-rail: Side-by-Side Comparison (2026)

k-rail

Teams protecting multi-tenant Kubernetes clusters on a zero budget will find k-rail's policy-as-code approach genuinely useful for blocking privilege escalation and enforcing network segmentation without vendor lock-in. The 441 GitHub stars and sustained community maintenance signal it actually works in production environments, not just in labs. Skip this if you need active vendor support or are already standardized on a commercial policy engine; k-rail is stable but no longer under active development, making it a solid option only for teams comfortable maintaining their own Kubernetes security controls.