schedctl
The host-side CLI. Verifies, pulls, and runs an OCI-packaged sched_ext scheduler, with built-in kernel preflight (schedctl doctor) and discrepancy reporting (schedctl status). Available on openSUSE Tumbleweed and the AUR.
sked
The Kubernetes operator. A SchedExt resource names the OCI scheduler image you want to run; sked creates a privileged DaemonSet that runs it on the cluster. Early-stage and minimal today — the place to start if your nodes already live in Kubernetes.