timoni
Timoni is a package manager for Kubernetes, powered by CUE
...Instead of mingling Go templates with YAML like Helm, or layering YAML on top of each-other like Kustomize, Timoni relies on cuelang's type safety, code generation and data validation features to offer a better experience of creating, packaging and delivering apps to Kubernetes. Note that Timoni in under active development and is still in its infancy. The APIs and command-line interface may change in a backward incompatible manner.