Lens Desktop (and its open-source version in OpenLens, which lacks some features like log access) has tools for exploring Kubernetes clusters in a visual environment, with statistics, events, and logs for troubleshooting.
K9s is a terminal-based UI for observing and managing deployed applications on Kubernetes clusters.
Monokle is a suite of tools designed to help everyone from developers to platform engineers manage the application configuration lifecycle in Kubernetes.
Venhow's Blog 