Buoyant Enterprise for Linkerd vs Greymatter

Buoyant Enterprise for Linkerd (BEL) is Buoyant’s enterprise distribution of Linkerd, a service mesh for Kubernetes. It encrypts meshed traffic with mutual TLS and offers latency-based load balancing, timeouts, retries, circuit breaking, gRPC load balancing and blue-green or canary deployments. It supports communication across clusters, federated services and automatic cross-cluster failover. Observability includes layer 7 success-rate and latency metrics, Prometheus-compatible metric exports and OpenTelemetry tracing. High Availability Zone-aware Load Balancing keeps requests in-zone under normal load and sends them to other zones when local endpoints are overloaded or return errors. Supported environments include Kubernetes and managed or self-hosted distributions such as Amazon EKS, Google GKE, Microsoft Azure AKS, Oracle OKE, Rancher RKE2 and Red Hat OpenShift. Linux VM workloads are supported in Premium and Strategic; the product also describes management of non-Kubernetes workloads including Windows VMs. It is free to try, and companies with fewer than 50 employees can use it in production at any scale. Premium and Strategic pricing is available by request.

Greymatter is a Zero Trust Networking platform for controlling, connecting, and securing applications, APIs, and AI workloads. Its architecture has analytics, zero trust, service connectivity, orchestration, and enterprise-integration layers. Deployments can run across AWS, Azure, GCP, Oracle Cloud, sovereign clouds, Kubernetes distributions, virtual machines, edge environments, and disconnected settings. Greymatter automates workload identity provisioning, applies mutual TLS, and uses NIST-validated FIPS 140-3 cryptography, CMVP #5191. GitOps Playbooks manage traffic policies across clusters with autonomous updates and zero-downtime changes. Deployment options include canary, blue-green, and progressive delivery with health checks, fallback logic, and rollback. Analytics integrates with Grafana, Kibana, Prometheus, Splunk, Elasticsearch, SIEMs, and APMs. Identity integrations support OAuth2, OIDC, and PKI, including Keycloak, Ping Federate, Okta, and Auth0. It offers hybrid deployment, enterprise support, and a 30-day free trial.