Alternativas open source a Docker

nerdctl is a command-line tool that manages containers and images using containerd as the runtime, providing a Docker-compatible interface for container lifecycle management. It supports running containers with the same command syntax and flags as Docker, including multi-container Compose workflows, and enables rootless container execution without host kernel escalation. The tool extends beyond basic container management with several advanced distribution and security capabilities. It can start containers before full image download by fetching only metadata and on-demand layers from eStargz-f

Podman is a container engine designed for managing containerized applications and images without the need for a persistent background daemon. By utilizing a fork-exec process model, it executes container management commands as direct child processes of the host system, ensuring that container lifecycles are handled through standard host-level process control. The project distinguishes itself through a focus on rootless security and cross-platform compatibility. It employs user namespace mapping to allow unprivileged users to manage isolated workloads without requiring administrative system ac

rkt is a secure Linux container engine and pod-native container manager. It provides a composable execution environment for launching and managing isolated application containers on Linux, serving as a runtime designed around open industry standards for image formats and networking interfaces. The system is distinguished by a pod-native execution model that groups multiple containers and shared resources into single, self-contained units. It utilizes pluggable execution engines to provide secure isolation, including the use of hardware-based virtualization to create security boundaries betwee