k8s-sidecar-injector vs Portainer: What are the differences?
k8s-sidecar-injector: Kubernetes sidecar injection service. It is a small service that runs in each Kubernetes cluster, and listens to the Kubernetes API via webhooks. For each pod creation, the injector gets a (mutating admission) webhook, asking whether or not to allow the pod launch, and if allowed, what changes we would like to make to it; Portainer: Simple management UI for Docker. Portainer is an open-source lightweight management UI which allows you to easily manage your Docker environments Portainer is available on Windows, Linux and Mac. It has never been so easy to manage Docker !.
k8s-sidecar-injector and Portainer can be primarily classified as "Container" tools.
k8s-sidecar-injector is an open source tool with 143 GitHub stars and 19 GitHub forks. Here's a link to k8s-sidecar-injector's open source repository on GitHub.