Koala

Koala is a command-line tool that brings Linux virtual machines to Apple silicon Macs. Instead of one shared Linux layer, it gives every job, service, development environment or AI agent its own ARM64 VM, complete with a separate kernel, disk and network stack. The project is distributed as a Homebrew formula and is currently in preview, so it targets users comfortable with early-stage software.

The core workflow is built around a small set of commands. You can run a one-off command inside a fresh image, create a named VM that persists after the terminal closes, start and stop it later, and open an interactive shell inside it. Images are pulled from standard container registries such as Docker Hub, and access is limited to what you explicitly grant each VM.

Isolation is the main selling point. Because each workload has its own kernel and network, a compromised process or misbehaving agent stays contained, which matters when running generated code or third-party services. The tool also fits developers who want a clean Linux environment for builds and tests without maintaining a full hypervisor setup by hand.

Before adopting it, check the requirements: an Apple silicon Mac running macOS 26 or newer, plus linux/arm64 images. Installation takes two commands and does not need sudo, and the manager runs per user. Users on older macOS versions or Intel hardware should look elsewhere, and those needing x86 images will hit a wall.

For teams already on modern Apple hardware, Koala