Multicluster-controller is a Go library for building Kubernetes controllers that need to watch resources in multiple clusters. It uses the best parts of controller-runtime (the library powering kubebuilder and now operator-sdk) and replaces its API (the manager, controller, reconcile, and handler packages) to support multicluster operations.
Fully automated, policy driven continuous deployment solution for Kubernetes Keel
KubeDirector uses standard Kubernetes (K8s) facilities of custom resources and API extensions to implement stateful scaleout application clusters. This approach enables transparent integration with K8s user/resource management and existing K8s clients and tools.
kooper - Kooper is a simple Go library to create Kubernetes operators and controllers.
operator-kit - A library for creating a Kubernetes Operator
Stash by AppsCode is a Kubernetes operator for restic. If you are running production workloads in Kubernetes, you might want to take backup of your disks. Traditional tools are too complex to setup and maintain in a dynamic compute environment like Kubernetes. restic is a backup program that is fast, efficient and secure with few moving parts. Stash is a TPR controller for Kubernetes built around restic to address these issues
Searchlight by AppsCode is a Kubernetes operator for Icinga. If you are running production workloads in Kubernetes, you probably want to be alerted when things go wrong. Icinga periodically runs various checks on a Kubernetes cluster and sends notifications if detects an issue. It also nicely supplements whitebox monitoring tools like, Prometheus with blackbox monitoring can catch problems that are otherwise invisible, and also serves as a fallback in case internal systems completely fail. Searchlight is a TPR controller for Kubernetes built around Icinga to address these issues.