Linkerd

Linux · Self-hosted

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Linkerd is ranked #8 of 18 in service mesh platforms on Freedom251. It runs on Linux, Self-hosted. There is a free plan.

Linkerd plans and pricing

All plans

Linkerd open source Free Open source, Apache 2.0 licensed · Requires Kubernetes linkerd.io · 29 Sept 2026

Compared on service mesh platforms

Free plan: Yes
Deployment model: self_hosted
Proxy architecture: sidecar
mTLS support: Yes
Traffic policies: Yes
Multi-cluster support: Yes
Supported platforms: Kubernetes

Best Linkerd alternatives

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Two bars AWS App Mesh Free tier No. 1Free6.6 Two bars Buoyant Enterprise for Linkerd Free tier No. 2Free6.6 One bar Flomesh Service Mesh Free tier No. 3Free6.5 One bar Istio Free tier No. 4Free6.5 One bar Kong Gateway Free tier No. 5Free6.5 Two bars Kuma Free tier No. 6Free6.5

The record

Product: Linkerd is a service mesh for Kubernetes that adds runtime debugging, observability, reliability, and security without requiring code changes.
Traffic support: Linkerd proxies HTTP, HTTP/2, gRPC, and arbitrary TCP traffic, including TLS connections and WebSockets.
Security: Linkerd automatically enables mutual TLS for communication between meshed applications and supports authorization policies between services.
Observability: Linkerd records request volume, success rates, and latency distributions for HTTP, HTTP/2, and gRPC traffic, plus TCP-level metrics.
Metrics retention: The Prometheus instance included with Linkerd Viz retains metrics for a short fixed interval, currently six hours, and Linkerd is designed to supplement an existing metrics store.
Traffic management: Linkerd supports load balancing, retries, timeouts, dynamic request routing, traffic splitting, and rate limiting.
Integrations: Linkerd can use Prometheus and Grafana for metrics and dashboards, and supports distributed tracing.
Deployment: Linkerd is installed into a Kubernetes cluster and adds its data plane to workloads by injecting proxies into their pods.
Requirements: Linkerd requires a modern Kubernetes cluster and a functioning kubectl command for installation.
Proxy: Linkerd’s ultralight Linkerd2-proxy is written in Rust and designed specifically for the service mesh sidecar use case.
Security audit: Linkerd says it completed its 2024 security audit, which included penetration testing and white-box testing.
Commercial support: Buoyant offers 24x7 enterprise support, training, and architectural reviews for Linkerd.
Enterprise distribution: Buoyant Enterprise for Linkerd lists a FIPS-compliant distribution with full L7 visibility and network encryption, authentication, and authorization.
Governance: Linkerd is a CNCF graduated project licensed under Apache 2.0.
Price from: Free

Where it ranks on Freedom251

Best Service Mesh Platforms in 2026#8 of 18

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Sources

linkerd.io/docs/overview/· checked 29 Sept 2026
linkerd.io/docs/features/· checked 29 Sept 2026
linkerd.io/docs/features/telemetry/· checked 29 Sept 2026
linkerd.io/docs/getting-started/· checked 29 Sept 2026
linkerd.io/docs/reference/architecture/· checked 29 Sept 2026
linkerd.io/2025/02/18/linkerd-2024-security-audit/· checked 29 Sept 2026
linkerd.io/enterprise/· checked 29 Sept 2026
linkerd.io/faq/· checked 29 Sept 2026