Cloud Hypervisor vs Multipass

Cloud Hypervisor is a free, open-source virtual machine monitor written in Rust for modern cloud workloads. It runs modern Linux and Windows guests on Linux hosts with x86-64 or AArch64 architectures, using minimal hardware emulation. Operators can manage VM lifecycles through a REST API or command-line interface, with an optional D-Bus API. It supports snapshots, nested virtualization, paravirtualized devices, physical device passthrough, and live migration between hosts without interrupting VMs. Migration data can be encrypted using mutual TLS. The maker says direct kernel boot reaches userspace in less than 100 ms. The project is supported by Kata Containers for running secure containerized workloads and is governed openly as part of the Linux Foundation. It has no commercial plan or usage limits stated. Linux hosts need kernel 4.11 or later for required KVM functionality; kernel 5.6 is recommended for adequate performance. Packages for some popular Linux distributions are available through the Open Build Service. For help, the project points users to GitHub discussions or Slack, with GitHub issues for bug reports and a mailing list for broader discussion.

Multipass runs cloud-style virtual machines on Linux, macOS, and Windows workstations. It is intended for prototyping cloud deployments locally and creating customized Linux development environments. Instances can use cloud-init metadata, including custom definitions for configured servers, and local workflows can model deployments for AWS, Azure, Google, IBM, and Oracle. Multipass fetches Ubuntu images from Canonical and offers a growing catalogue of images with pre-installed applications. Users can share host files and folders with instances; the primary instance integrates with the native filesystem and has dedicated hot-key access. Both command-line and graphical interfaces are available, and the documentation covers Windows Terminal integration and running Docker containers in an instance. Host hypervisors are Host Compute System on Windows, Apple Virtualization on macOS, and QEMU on Linux. The product is free; the listed plan costs nothing, with host requirements varying by operating system. Anyone with access to the Multipass daemon socket can fully control the software, including mounting host filesystems and changing instance security features. Canonical advises limiting daemon access to trusted users. Its access controls begin with group membership and can later use a user TLS certificate.