diff --git a/README.md b/README.md
index 87eabfe..2908219 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,9 @@ Many cybersecurity professionals enable racist state violence, wittingly or unwi
   - [Code libraries and bindings](#code-libraries-and-bindings)
   - [Security Orchestration, Automation, and Response (SOAR)](#security-orchestration-automation-and-response-soar)
 - [Cloud platform security](#cloud-platform-security)
+  - [Distributed observability and tracing](#distributed-observability-and-tracing)
   - [Kubernetes](#kubernetes)
+  - [Service meshes](#service-meshes)
 - [Communications security (COMSEC)](#communications-security-comsec)
 - [DevSecOps](#devsecops)
   - [Application or Binary Hardening](#application-or-binary-hardening)
@@ -85,20 +87,31 @@ See also [asecure.cloud/tools](https://asecure.cloud/tools/).
 
 - [Checkov](https://www.checkov.io/) - Static analysis for Terraform (infrastructure as code) to help detect CIS policy violations and prevent cloud security misconfiguration.
 - [Falco](https://falco.org/) - Behavioral activity monitor designed to detect anomalous activity in containerized applications, hosts, and network packet flows by auditing the Linux kernel and enriched by runtime data such as Kubernetes metrics.
-- [Istio](https://istio.io/) - Open platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data.
 - [Kata Containers](https://katacontainers.io/) - Secure container runtime with lightweight virtual machines that feel and perform like containers, but provide stronger workload isolation using hardware virtualization technology as a second layer of defense.
 - [Prowler](https://github.com/toniblyx/prowler) - Tool based on AWS-CLI commands for Amazon Web Services account security assessment and hardening.
 - [Scout Suite](https://github.com/nccgroup/ScoutSuite) - Open source multi-cloud security-auditing tool, which enables security posture assessment of cloud environments.
 - [gVisor](https://github.com/google/gvisor) - Application kernel, written in Go, that implements a substantial portion of the Linux system surface to provide an isolation boundary between the application and the host kernel.
 
+### Distributed observability and tracing
+
+- [OpenTelemetry](https://opentelemetry.io/) - Observability framework for cloud-native software, comprising a collection of tools, APIs, and SDKs for exporting application performance metrics to a tracing backend (formerly maintained by the OpenTracing and OpenCensus projects).
+- [Jaeger](https://www.jaegertracing.io/) - Distributed tracing platform backend used for monitoring and troubleshooting microservices-based distributed systems.
+- [Zipkin](https://zipkin.io/) - Distributed tracing system backend that helps gather timing data needed to troubleshoot latency problems in service architectures.
+
 ### Kubernetes
 
 - [KubeSec](https://kubesec.io/) - Static analyzer of Kubernetes manifests that can be run locally, as a Kuberenetes admission controller, or as its own cloud service.
+- [Linkerd](https://linkerd.io/) - Ultra light Kubernetes-specific service mesh that adds observability, reliability, and security to Kubernetes applications without requiring any modification of the application itself.
 - [Managed Kubernetes Inspection Tool (MKIT)](https://github.com/darkbitio/mkit) - Query and validate several common security-related configuration settings of managed Kubernetes cluster objects and the workloads/resources running inside the cluster.
 - [Polaris](https://polaris.docs.fairwinds.com/) - Validates Kubernetes best practices by running tests against code commits, a Kubernetes admission request, or live resources already running in a cluster. 
 - [kube-forensics](https://github.com/keikoproj/kube-forensics) - Allows a cluster administrator to dump the current state of a running pod and all its containers so that security professionals can perform off-line forensic analysis.
 - [kube-hunter](https://kube-hunter.aquasec.com/) - Open-source tool that runs a set of tests ("hunters") for security issues in Kubernetes clusters from either outside ("attacker's view") or inside a cluster.
 
+### Service meshes
+
+- [Consul](https://consul.io/) - Solution to connect and configure applications across dynamic, distributed infrastructure and, with Consul Connect, enabling secure service-to-service communication with automatic TLS encryption and identity-based authorization.
+- [Istio](https://istio.io/) - Open platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data.
+
 ## Communications security (COMSEC)
 
 See also [Transport-layer defenses](#transport-layer-defenses).