# Tart

> Tart is a virtualization toolset to build, run, and manage macOS and Linux virtual machines on Apple Silicon, built for CI and automation workflows.

Tart is an open-source virtualization toolset designed to build, run, and manage macOS and Linux virtual machines (VMs) on Apple Silicon. It leverages Apple's native `Virtualization.Framework` to deliver near-native performance, making it ideal for CI pipelines and automation workflows. Tart supports OCI-compatible container registries for pushing and pulling VM images, and integrates seamlessly with any CI system. It powers Cirrus Runners, a drop-in replacement for GitHub-hosted runners offering 2–3× better performance.

- **Near-native performance** — *Uses Apple's Virtualization.Framework for benchmark-proven performance close to bare metal.*
- **OCI registry support** — *Push and pull virtual machine images from any OCI-compatible container registry, just like Docker images.*
- **Packer Plugin** — *Automate VM creation using the Tart Packer Plugin for repeatable, infrastructure-as-code VM builds.*
- **CI system integration** — *Easily integrates with GitHub Actions, Cirrus CI, and any other CI/CD platform.*
- **Homebrew installation** — *Get started instantly with `brew install cirruslabs/cli/tart` on any Apple Silicon Mac running macOS 13 Ventura or later.*
- **macOS and Linux support** — *Run both macOS and Linux VMs side by side on the same Apple Silicon host.*
- **Cirrus Runners powered** — *Tart is the engine behind Cirrus Runners, a managed service offering fast, cost-effective GitHub Actions runners.*
- **Fair Source licensed** — *The project is available on GitHub and free to use for most purposes under its Fair Source license.*

Note: Acquired by OpenAI in April 2026.

## Features
- macOS and Linux VM support on Apple Silicon
- Near-native performance via Apple Virtualization.Framework
- OCI-compatible container registry push/pull
- Tart Packer Plugin for automated VM creation
- CI system integration (GitHub Actions, Cirrus CI, etc.)
- Homebrew installation
- Cirrus Runners integration
- VM cloning and management CLI

## Integrations
GitHub Actions, Cirrus CI, OCI container registries, HashiCorp Packer, AWS Marketplace, Homebrew

## Platforms
MACOS, LINUX, API, CLI

## Pricing
Open Source

## Version
2.32.1

## Links
- Website: https://tart.run
- Documentation: https://tart.run
- Repository: https://github.com/cirruslabs/tart
- EveryDev.ai: https://www.everydev.ai/tools/tart