1VMTool vs Cua (Lume)
These get shortlisted together because both run macOS and Linux VMs on Apple silicon. They are built for different jobs, and the comparison is mostly about telling them apart.
Side by side
| 1VMTool | Cua (Lume) | |
|---|---|---|
| What it is for | Running and resetting virtual machines. | Infrastructure for computer-use agents. |
| Snapshot mechanism | APFS clone of the disk bundle. Take and restore in well under a millisecond, independent of disk size. | Not the product. |
| Interface | GUI and CLI as peers. | CLI and SDKs, aimed at agents rather than people. |
| macOS guests | Supported. | Supported, on Virtualization.framework. |
| Windows guests | Experimental first-party engine. | Not on the Apple-silicon VM path. |
| Agent tooling | An MCP server for driving machines. | The entire point — SDKs, benchmarks, drivers, cross-OS fleets. |
| Price | One-time purchase. | Free and open source. |
| Open source | Closed source. | MIT. |
Highlighted cells mark the stronger side of each row. Competitor details checked September 2026 against vendor documentation — pricing and features move, so verify anything decision-critical at the source.
When you should stay on Cua (Lume)
You are building or evaluating computer-use agents — software that drives a real desktop by clicking and typing. Cua exists for that: sandboxes, SDKs, benchmarks and an MCP server, with Lume as the local VM layer underneath. 1VMTool is a virtualization app, not an agent framework, and does not compete on any of that.
Where Cua (Lume) frustrates people
- The VM manager is a means, not the product. Lume exists to give agents a desktop; it is not trying to be a general-purpose virtualization app.
- No GUI for managing machines — no library, no snapshot tree, no storage view.
- No Windows guests on the Apple-silicon VM path.
- The project's own direction has been moving toward Apple's Containerization framework, so the local VM layer is one part of a shifting stack rather than a stable end product.
- Lume telemetry is on by default. It records pseudonymous install and command metadata rather than VM contents, and you opt out with an environment variable — fine for a tool aimed at agent builders, but it is on until you turn it off.
Why someone moves to 1VMTool
- You want a virtualization app rather than agent infrastructure that happens to include one.
- You want snapshots, rollback and a snapshot tree.
- You want Windows on ARM.
- You want a desktop interface with host metering and per-guest limits.
Frequently asked questions
Is Cua a 1VMTool competitor?
Only in the narrow sense that Lume, one of its components, runs macOS and Linux VMs on Apple silicon. Cua's purpose is giving AI agents a computer to use. If that is your problem, 1VMTool is the wrong tool.
What is Lume?
Cua's local VM manager for Apple silicon Macs — a CLI that creates and runs macOS and Linux virtual machines on Apple's Virtualization.framework, so agents have a desktop to drive.
1VMTool has an MCP server too — is that the same thing?
No. 1VMTool's MCP server lets an agent create, start and dispose of virtual machines. Cua gives an agent the ability to operate the desktop inside one. They sit at different layers and can be used together.
Try it against your own workflow
The limits are stated on every screen before you commit to anything, which is the fastest way to find out whether this is your tool.