K3s vs Seabird

K3s is a certified, lightweight Kubernetes distribution for IoT and edge computing. It runs self-hosted on Linux and is released for x86_64, ARMv7, and ARM64. The distribution arrives as one binary or a minimal container image; the site describes the binary as under 70 MB, while documentation says under 100 MB. Documented uses include edge systems, homelabs, IoT, continuous integration, development, ARM single-board computers, air-gapped environments, and embedded Kubernetes. SQLite is the default datastore, with etcd, MySQL, and Postgres available. K3s packages containerd or cri-dockerd, Flannel, CoreDNS, Traefik, ServiceLB, Kube-router, local-path-provisioner, and Spegel. High-availability deployments can use embedded storage or external MySQL, PostgreSQL, or etcd. Air-gapped installation supports private registries, manually deployed images, or an embedded registry mirror. Security guidance includes hardening and CIS self-assessment material. Automated Kubernetes-native upgrades use Rancher’s system-upgrade-controller.

Seabird is a desktop Kubernetes IDE for exploring and managing clusters on Linux, macOS, and Windows. It brings logs and metrics into a graphical interface, including memory and CPU utilization for nodes, pods, and containers through Metrics Server integration. A native terminal runs commands in containers, and the manifest editor keeps the API reference available while authoring. Users can forward a container port to localhost with a button. Credential plugins can add authentication protocols the Kubernetes client does not support natively; those plugins must be installed on the system PATH. The project describes Seabird as designed for the GNOME desktop, recommends Flatpak on Linux, and makes downloads available through its releases. The Flatpak can access files only in the home directory unless system-directory access is granted with Flatseal. Seabird is released under the Mozilla Public License v2, and its source code is available for audit. It is paid, has no free plan, and offers an unlimited free trial.