Murre is an on-demand, scaleable source of container resource metrics for Kubernetes. It fetches CPU & memory resource metrics directly from the kubelet and enriches the resources with the relevant Kubernetes requests and limits from each PodSpec.

https://github.com/groundcover-com/murre

A couple of new open source tools, cnquery and cnspec. The first provide a query tool atop cloud infrastructure, handy for asset inventory. The second provides testing and policy based tools on top of that inventory.

https://blog.mondoo.com/cnquery-cnspec
https://github.com/mondoohq/cnquery
https://github.com/mondoohq/cnspec

Devtron is an integrated Kubernetes distribution which bundles Argo, Grafana, Helm, Keda, Prometheus and more, saving you the effort of integrating yourself.

https://github.com/devtron-labs/devtron

Wazuh is an open source tool used for threat prevention, detection, and response. It is capable of protecting workloads across on-premises, virtualized, containerized, and cloud-based environments.

https://github.com/wazuh/wazuh

cdebug looks like a handy tool for debugging running containers. Support for several container runtimes, and tools for running a shell, exporting filesystems and forwarding ports to localhost.

https://iximiuz.ck.page/posts/container-tools-tips-and-tricks-issue-2
https://github.com/iximiuz/cdebug