LXD

LXD combines system containers and virtual machines in one management platform. It suits Linux operators who need both workload types across hosts or clusters. Its broad controls and interfaces are compelling, but Linux-only hosting makes it a poor fit for teams seeking a cross-platform desktop tool.

Overview

LXD manages LXC-based system containers alongside KVM-based virtual machines, letting administrators handle distinct workloads through the same platform. It supports images for many Linux distributions and Windows virtual machines; Windows is a guest option, not a supported container type.

Management options include a CLI, REST API, web UI, and third-party tools. The single REST API uses HTTP for local and remote access, while the official UI is available by default starting with LXD 5.21.0 LTS.

Key features

• Workload controls: Resource limits, projects, scheduled and expiring snapshots, hardware passthrough, live migration, and advanced networking make LXD more suited to infrastructure management than a basic container launcher.
• Security: Containers run unprivileged by default. Virtual machines support UEFI Secure Boot and vTPM, giving administrators meaningful security options across both workload types.
• Scale and integrations: LXD can scale from laptop use to thousands of instances in a data center; its documentation describes clusters of up to 50 servers. Integrations for Juju, MAAS, Ansible, Terraform, Puppet Bolt, and Packer make it easier to fit into established operations workflows.
• Release support: LTS releases arrive every two years and receive five years of standard support. Community resources include documentation, a discussion forum, tutorials, and GitHub contribution channels. Canonical offers commercial support through Ubuntu Pro.

Pricing

The core open-source software is free, as is Ubuntu Pro Personal for up to five physical Ubuntu systems with unlimited VMs or containers. The personal offer is useful for a small number of Ubuntu machines, but its physical-system cap may rule it out for larger deployments.

• LXD open source: free; includes KVM-based virtual machines, system containers, and self-hosted deployment.
• Ubuntu Pro Personal: free; covers up to five physical Ubuntu systems with unlimited VMs or containers.
• Ubuntu Pro Enterprise workstation: $25 a year, billed per workstation; includes a security and compliance subscription with optional support.
• Ubuntu Pro Enterprise server: $500 a year, billed per server; includes a security and compliance subscription with optional support.

The paid Ubuntu Pro options suit organizations that need security and compliance subscriptions, with optional support rather than support included by default. LXD's free software remains the central offering; Ubuntu Pro is the route to Canonical's commercial support.

Platforms

LXD requires a Linux host and supports self-hosted deployment, with API and web access for management. Rootless mode and image building are supported. It does not provide Windows containers or a desktop GUI, so Windows VM images should not be mistaken for Windows-host compatibility.

Who it's for

LXD is a strong fit for Linux administrators who need to manage containers and VMs together, value remote API access, or expect to grow from a laptop deployment to a clustered data center. Its integrations and operational controls favor teams with infrastructure workflows to automate. It is less suitable for users who need a desktop application, Windows hosting, or container-only tooling with no VM management requirement.

Pros and cons

Pros

• One platform manages LXC-based system containers and KVM-based VMs, including Windows guests.
• Unprivileged containers by default, plus Secure Boot and vTPM support for VMs.
• CLI, remote-capable REST API, web UI, and third-party tool support offer several management paths.
• Free open-source deployment, with Ubuntu Pro options for security and compliance subscriptions.

Cons

• Linux is the only supported host OS, limiting use on mixed-platform teams.
• No desktop GUI or Windows containers; the web UI does not change the Linux host requirement.
• Ubuntu Pro Personal covers at most five physical Ubuntu systems, while enterprise subscriptions are billed per workstation or server.

Alternatives

• Docker Desktop is worth considering for teams seeking a freemium tool across Linux, macOS, Windows, and web; its Personal plan is free, with Pro at $9 a month.
• Apptainer is another free open-source container platform, with commercial support available through partners and support for Linux, macOS, and Windows.
• Incus is a free Apache 2-licensed option for readers comparing open-source software that supports Linux, macOS, and Windows.
• Rancher Desktop is a free alternative for readers looking for an option that supports Linux, macOS, and Windows.
• Finch offers a free option with no licensing tiers or commercial agreements required, and supports Linux, macOS, and Windows.
• Colima is a free MIT-licensed project for container runtimes on macOS and Linux.
• crun is a free OCI container runtime for Linux and self-hosted use.
• Podman is free and open source, with container, pod, and image management plus Podman Desktop across Linux, macOS, Windows, and self-hosted environments.

Explore more options in Container Runtime Software, Virtualization Management Software, and Container Engines.

Verdict

Choose LXD if you administer Linux systems and want one capable platform for system containers and KVM virtual machines, with a strong set of controls and room to scale. Look elsewhere if you need Windows or macOS hosting, a desktop GUI, or only a lightweight container tool.