podman is a daemonless container runtime for managing containers, pods, and container images. It is intended as a counterpart to CRI-O, to provide low-level debugging not available through the CRI interface used by Kubernetes.
Podman vs Docker opinions
Same syntax, runs without socket, more secure
BitNami Stacks make it incredibly easy to deploy your favorite open source software. BitNami Stacks include an open source application and all of the other software necessary to run it, such as Apache, MySQL, PHP or Ruby.
Containers which offer an environment as close as possible as the one you'd get from a VM but without the overhead that comes with running a separate kernel and simulating all the hardware.
rkt is the next-generation container manager for Linux clusters. Designed for security, simplicity, and composability within modern cluster architectures, rkt discovers, verifies, fetches, and executes application containers with pluggable isolation.Discontinued
According to their Github page at https://github.com/rkt/rkt, the project has been discontinued. The repository has been archived.
rkt vs Docker opinions
Singularity is a container solution with a focus on building reproducible software stacks and running them most efficiently on existing HPC, scientific, compute farm and even enterprise architectures.
Singularity vs Docker opinions
Lightweight, very easy to setup. Moving containers between servers is as easy as copying a file.
Crane is a container image tool that includes building local Docker images; connecting to DockerHub; listing local and remote container images; pushing local images to the DockerHub registry, and importing remote container images into an MLOps platform cluster.
CRI-O is an implementation of the Kubernetes CRI (Container Runtime Interface) to enable using OCI (Open Container Initiative) compatible runtimes. It is a lightweight alternative to using Docker as the runtime for kubernetes.
CRI-O vs Docker opinions
It is supported by Red Hat
OpenVZ is container-based virtualization for Linux.
OpenVZ creates multiple secure, isolated Linux containers (otherwise known as VEs or VPSs) on a single physical server enabling better server utilization and ensuring that applications do not conflict.
Each container performs.