ctlptl vs Seabird

ctlptl is a free command-line tool for declaratively configuring local Kubernetes clusters with YAML. Its main commands show running clusters, create them, apply configuration, and delete clusters along with their state. The project lists Docker Desktop, KIND, Minikube, and K3D, with registry support for KIND, Minikube, and K3D. Configuration can allocate CPUs and set up local registries; Minikube supports per-cluster Kubernetes version selection. ctlptl can also create a cluster on a remote Docker host, a capability the project describes for CI environments. Installation options include Homebrew for macOS and Linux, Scoop for Windows, Go install, Docker, and prebuilt release binaries. A Docker image containing recent kind and ctlptl versions is offered for CI. The project supports macOS, Linux, and Windows and is licensed under Apache License 2.0. Its README calls it a work in progress and says it is not meant for remote clusters or remote development sandboxes. Usage statistics are anonymized, with an opt-out command available.

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.