k3d vs Kubus

k3d is a free, community-driven wrapper that runs k3s, Rancher Lab’s minimal Kubernetes distribution, inside Docker. It creates single-node and multi-node clusters for local Kubernetes development and can support hot-reloading, Tilt build-deploy-test workflows, and Drone CI service use. Docker is required, while kubectl is used to interact with clusters. For k3d v5.x.x, the overview specifies Docker v20.10.5 or later and runc v1.0.0-rc93 or later. A registries.yaml file configures registries, authentication, and certificates, and documentation covers local registries managed by k3d. Services can be exposed through Ingress or NodePort by mapping container ports to the host. Covered k3s integrations include CoreDNS, local-path-provisioner, Traefik, and the Klipper service load balancer. Installation options include release binaries, Homebrew, AUR, Chocolatey, Scoop, arkade, asdf, and Go. k3d runs on Linux, macOS, Windows, and self-hosted setups. It is not an official Rancher (SUSE) product.

Kubus is a free, open-source Kubernetes GUI that runs locally and brings cluster resources, logs, shells, port forwards, metrics, and Helm into one desktop app. It can combine selected kubeconfig contexts in merged lists, with a cluster column identifying each resource's context. Alongside built-in Kubernetes resource types, it discovers custom resource definitions live. For troubleshooting, Kubus streams logs from multiple pods and provides container terminals, ephemeral debug containers, and node shells. Users can browse, install, upgrade, roll back, and uninstall Helm releases without the Helm binary. Kubus uses existing kubeconfig credentials and supports GKE, EKS, and AKS through their credential plugins; connections can also use SSH jump hosts or SOCKS and HTTP proxies. The local server binds to 127.0.0.1, and the maker says there is no cloud, account, or telemetry; Secret values are redacted by default. It is available on Windows, macOS, and Linux, though new releases no longer support Intel Macs. Metrics and health charts require metrics-server in the cluster.