Podman

Podman (Pod Manager) is a next-generation, open-source container engine maintained primarily by Red Hat and the open-source community. Engineered to be a direct, drop-in replacement for Docker, Podman implements the Open Container Initiative (OCI) specification with a critical architectural advantage: it operates entirely without a background daemon and supports rootless execution by default.

Because Podman does not require root privileges or a persistent background process, it significantly reduces the attack surface of containerized workloads in security-sensitive enterprise environments. Podman uniquely understands the concept of Kubernetes pods natively, allowing developers to group multiple containers together locally and export production-ready Kubernetes YAML manifests directly from local running workloads.

Podman is completely free and open-source software under the Apache 2.0 license, available on Linux distributions, macOS, and Windows via Podman Desktop. With zero licensing restrictions and full command alias compatibility (`alias docker=podman`), it has emerged as the premier open-source container alternative for modern engineering teams.