We are using https://github.com/ElasticBox/elastickube to manage users and permissions to deploy services and pods.

We are using kubernetic (www.kubernetic.com) in order to see/scale/delete kubernetes resources. It still has some issues with displaying correct information but in general it's nice.

The fabric8 console provides a console to manage resources as well as full continuous delivery pipelines built on top of Kubernetes. Some great articles & blog posts about it here.

There is the dashboard (https://github.com/kubernetes/dashboard) or the now deprecated kube-ui (https://github.com/kubernetes/kube-ui).

Also I've played with Weave Scope which has a pretty cool integration with k8s: https://www.weave.works/products/weave-scope/