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Lume

macOS and Linux VM runtime for AI agents on Apple Silicon

open sourceupdated Apr 21, 2026

Lume is an open-source CLI for creating and managing macOS and Linux virtual machines on Apple Silicon, built specifically for AI agent sandboxing, CI/CD pipelines, and desktop automation. Using Apple's native Virtualization.Framework for near-native performance, it provides the missing isolation layer for running coding agents safely — so an accidental destructive command doesn't affect your host machine.

Lume is a VM runtime built by Cua (YC X25) that solves a specific problem for developers on Apple Silicon: running AI coding agents in fully isolated macOS or Linux virtual machines with near-native performance. When you give Claude Code or Codex CLI permission to execute shell commands and modify files, there is always a risk that an agent makes a destructive mistake. Lume provides the safety net — each agent session runs inside its own VM with an independent filesystem, network stack, and system state that can be snapshotted and rolled back instantly.

Built on Apple's native Virtualization.Framework, Lume avoids the overhead of traditional hypervisors and achieves performance that is nearly indistinguishable from running natively. This is a key differentiator from Docker-based sandboxing: Docker cannot run macOS containers, and Linux containers share the host kernel, offering weaker isolation. Lume creates true virtual machines with their own kernel, making it suitable for testing macOS-specific code paths, running CI/CD builds for Apple platforms, and creating disposable development environments. The CLI supports creating, starting, stopping, and snapshotting VMs with simple commands.

The broader Cua platform extends Lume into computer-use agent infrastructure — AI agents that can operate macOS and Linux desktops autonomously for testing, automation, and research. With over 12,900 GitHub stars on the monorepo, MIT licensing, and active development, Lume fills a unique gap in the developer tools landscape. The Show HN launch in January 2026 reached 521 points on Hacker News, confirming strong developer interest in Apple Silicon virtualization for agent sandboxing and CI/CD use cases.

Pricing

Free and open source (MIT). Managed cloud offering in development.

Platforms

macOS on Apple Silicon (M1/M2/M3/M4). Creates macOS and Linux VMs. CLI-based workflow.

Categories

Tags

Use Cases

E2B logo

E2B

Secure cloud sandboxes for AI agents

E2B provides secure cloud sandboxes that let AI agents execute code, run terminal commands, and interact with filesystems in isolated environments. Each sandbox spins up in ~150ms with its own OS, giving agents a safe space to run untrusted code. Supports Python, JavaScript, and any language via custom Dockerfiles. Used by AI coding assistants, data analysis agents, and code interpreters. SDK available for Python and JavaScript with a simple API for programmatic sandbox control.

freemiumOpen Source
Daytona logo

Daytona

Open-source dev environment management with AI integration

Daytona is secure, elastic infrastructure for running AI-generated code in isolated sandboxes. It gives agents and developer workflows programmable environments with dedicated kernel, filesystem, network, vCPU, memory, and disk, backed by OCI/Docker compatibility, SDK/API access, and under-90ms sandbox startup. The project has 72,000+ GitHub stars and is AGPL-3.0 licensed.

Open Source
Microsandbox logo

Microsandbox

Local microVM sandboxes for AI agent code execution

Microsandbox provides hardware-level isolated sandboxes for AI agents to execute code safely on local machines. Using libkrun microVMs and a 320ms bare-metal Linux/KVM homepage benchmark, it offers stronger isolation than Docker containers while staying lightweight enough for dev workstations. OCI-compatible with Python and Node.js runtimes. Apache-2.0 licensed with 6.6K+ GitHub stars.

Open Source
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NVIDIA OpenShell

Secure sandboxed runtime for AI agent execution

NVIDIA OpenShell provides kernel-level isolation for AI agent workloads with Landlock, seccomp, and network namespace sandboxing. Announced at GTC 2026 with 17 enterprise partners including Adobe, Atlassian, SAP, and Salesforce, it offers declarative YAML policy enforcement, L7 HTTP inspection, and GPU passthrough — purpose-built to contain the blast radius when autonomous coding agents interact with filesystems and networks.

Open Source

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Used in Stacks

Comparisons

Lume vs E2B — macOS VM Runtime vs Cloud Sandbox Platform

Lume and E2B both provide isolated environments for running AI agents safely, but their architectures serve different deployment models. Lume creates native macOS and Linux VMs on Apple Silicon for local agent sandboxing, while E2B offers cloud-hosted micro-VMs optimized for code execution. The choice depends on whether you need local Apple Silicon isolation or scalable cloud sandboxes.

LumeE2B

FAQ

What is Lume?

Lume is an open-source CLI for creating and managing macOS and Linux virtual machines on Apple Silicon, built specifically for AI agent sandboxing, CI/CD pipelines, and desktop automation. Using Apple's native Virtualization.Framework for near-native performance, it provides the missing isolation layer for running coding agents safely — so an accidental destructive command doesn't affect your host machine.

Is Lume free?

Yes — Lume is open source and free to use. Free and open source (MIT). Managed cloud offering in development.

Is Lume open source?

Yes — Lume is open source.

What are the best Lume alternatives?

The top editor-verified Lume alternatives are E2B, Daytona, Microsandbox, and more.