Open Source Docker Alternatives

    The best open source alternative to Docker is Podman. If that doesn't suit you, our users have ranked more than 10 alternatives to Docker and 19 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Docker are BitNami Application Stacks (Free, Open Source), LXC Linux Containers (Free, Open Source), rkt (Free, Open Source) and Singularity (Free, Open Source).

    This page was last updated Nov 14, 2021

    1. 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
      Almost everyone thinks Podman is a great alternative to Docker.
      Same syntax, runs without socket, more secure
      Positive comment over 1 year ago

    2. 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.

    3. 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.
    4. 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.


      According to their Github page at, the project has been discontinued. The repository has been archived.

      No screenshots yet
      Almost everyone thinks rkt is a great alternative to Docker.
    5. 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
      Almost everyone thinks Singularity is a great alternative to Docker.
      lgibelli Lightweight, very easy to setup. Moving containers between servers is as easy as copying a file.
      Positive comment over 3 years ago


      • FreeOpen Source
      • Linux is a little framework to host Docker. It is simple and modular and respect the convention over configuration paradigm. This is aimed at Hosters to manage a huge amount of different web application, and a quantity of domain names related with emails and so on.
      No screenshots yet
    6. The FreeBSD jail mechanism is an implementation of operating system-level virtualization that allows system administrators to partition a FreeBSD-based computer system into several independent mini-systems called jails.
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      FreeBSD Jails vs Docker opinions
      Most users think FreeBSD Jails is a great alternative to Docker.
      Great tools and documentation, they have been around for much longer than docker and are a more mature solution.
      Positive comment over 4 years ago

    7. An industry-standard container runtime with an emphasis on simplicity, robustness and portability Containerd supports OCI images, is designed to work in concert with gRPC and comes with many container lifecycle management features.
      No screenshots yet
    8. 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.
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • BSD
      • Solaris
      Packer is an open source tool for creating identical machine images for multiple platforms from a single source configuration. Packer is lightweight, runs on every major operating system, and is highly performant, creating machine images for multiple platforms in parallel.
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      Packer vs Docker opinions
      pros, cons and recent comments
      Packer is NOT an alternative to Docker. it is an API abstraction layer for creating repeatable machine images, not for orchestrating containers
      Negative comment 5 months ago

      Packer is a system building and provisioning tool. While it can be used to create a virtual machine, it is not itself virtual machine implementation.
      Negative comment 7 months ago

    Showing 10 of 19 alternatives