portainer.io
Portainer is a platform for deploying, running, securing, and governing Kubernetes across a fleet from a single control plane. It provides multi-cluster fleet management, GitOps deployment workflows, self-service with guardrails, and enterprise identity and access. Docker, Swarm, and Podman hosts join the same console. Portainer Business Edition is free for 3 nodes and includes RBAC, GitOps, fleet governance, and audit logs.