What is the difference between Cilium vs Greymatter.io?

**Cilium**: Cilium is a networking, observability, and security solution with an eBPF-based dataplane.. **Greymatter.io**: Zero trust service mesh platform for apps, APIs, and AI across hybrid cloud. built by Greymatter.io. Core capabilities include Zero trust policy enforcement across services and APIs, Service mesh connectivity across hybrid and multi-cloud environments, Automated certificate management for non-person entities (NPE).. Both serve the Microsegmentation market but differ in approach, feature depth, and target audience.

Who makes Cilium vs Greymatter.io?

**Cilium** is open-source with 23,959 GitHub stars. **Greymatter.io** is developed by Greymatter.io. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Is Cilium a good alternative to Greymatter.io?

Cilium and Greymatter.io serve similar Microsegmentation use cases: both are Microsegmentation tools, both cover Observability. Key differences: Cilium is Free while Greymatter.io is Commercial, Cilium is open-source. Review the feature comparison above to determine which fits your requirements.

Cilium vs Greymatter.io: Features, Integrations, Reviews (2026) | CybersecTools

Cilium vs Greymatter.io: Side-by-Side Comparison (2026)

Features, pricing, ratings, and pros & cons — compared head-to-head.

Cilium is a free microsegmentation tool. Greymatter.io is a commercial microsegmentation tool by Greymatter.io. Compare features, ratings, integrations, and community reviews side by side to find the best microsegmentation fit for your security stack.

CST Verdict

Based on our analysis of core features, here is our conclusion:

Cilium

Platform teams running Kubernetes on-premises or in hybrid clouds will get the most from Cilium because its eBPF kernel-level enforcement eliminates the latency and blind spots of traditional overlay networking. With 23,959 GitHub stars and active deployments at scale across financial services and public sector organizations, Cilium's approach to policy enforcement at the dataplane level is proven; it also handles observability without requiring sidecar injection, which keeps resource overhead predictable. Not the right fit for teams needing a managed SaaS experience or those prioritizing CSPM and infrastructure compliance scanning over network microsegmentation.

Data verified Jun 2026