If you (and others on this sub-thread) like managing kubernetes through version control, I humbly suggest trying out the ksonnet/kubecfg toolchain (https://github.com/ksonnet/kubecfg and the closely related ksonnet/ksonnet-lib repo - Disclaimer: I'm one of the contributors).

Helm is nice, but (imo, and as some of the comments here are also pointing out) oriented more towards consuming 3rd-party pre-built charts from some sort of centralised marketplace/repo. (This is an important use case, and yes I know it is certainly possible to use helm to manage your own internal software too.)