Skopeo is a command line utility that performs various operations on container images and image repositories.
Cost / License
- Free
- Open Source (Apache-2.0)
Platforms
- Linux
- Raspberry Pi
- Mac
- Homebrew
containerd is described as 'An industry-standard container runtime with an emphasis on simplicity, robustness and portability' and is a Virtualization tool in the network & admin category. There are more than 10 alternatives to containerd for a variety of platforms, including Linux, Mac, Windows, Self-Hosted and Rust apps. The best containerd alternative is Docker, which is both free and Open Source. Other great apps like containerd are Podman, Distrobox, Linux Containers (LXC) and BoxBuddy.
Skopeo is a command line utility that performs various operations on container images and image repositories.


Kata Containers is an open source, secure container runtime with lightweight virtual machines that feel and perform like containers, but provide stronger workload isolation using hardware virtualization technology as a second layer of defense.

Chaperone is a lightweight alternative to process environment managers like systemd or upstart. Chaperone provides an extensive feature set, including dependency-based startup, syslog logging, zombie harvesting, and job scheduling.
Stakkr is a lightweight development environment that relies on docker to deploy and link containers of all types. It can be installed in 3 steps : docker, stakkr then configuration. The config file is very simple and multiple services are included.
WinDocks provides Docker compatible containers on Windows Server 2012, with support for .nET and SQL Server containers, with integrated SQL Server clone and Web UI.