mTLS Service-to-Service Authentication

Smallstep

PKI & Certificate Management

Smallstep helps teams manage certificate authority, workload identity, and access foundations for modern applications, infrastructure, and internal platforms.

Buoyant

Kubernetes Management

Commercial Linkerd service mesh company offering managed and enterprise editions. Focused on lightweight, ultralow-latency mesh.

Kuma

Service Mesh

Universal service mesh from Kong supporting both Kubernetes and VM-based deployments with built-in mTLS and traffic policies.