1VMTool vs UTM
UTM is the most capable free VM app on the Mac and it emulates architectures nothing else will touch. The gap is snapshots, which it has never shipped, and the amount of QEMU you are asked to understand.
Side by side
| 1VMTool | UTM | |
|---|---|---|
| Snapshot mechanism | APFS clone of the disk bundle. Take and restore in well under a millisecond, independent of disk size. | Not in a release — QEMU full-VM snapshots are on main but unreleased. Clone or qemu-img meanwhile. |
| Price | One-time purchase. | Free, or a few dollars on the App Store. |
| Architectures | ARM64 guests only. No emulation. | ARM64 natively, plus x86, PPC and RISC-V under emulation. |
| Setup effort | Pick a template or a prepared recipe — Debian, Node.js, Python, Go, Rust — with limits stated up front. | You configure the machine, largely in QEMU's vocabulary. |
| Bundled dependencies | None. | QEMU and other GPL and LGPL components. |
| Accelerated 3D | Not shipped. | None for Windows; experimental for Linux. |
| Open source | Closed source. | Apache 2.0 front end. |
| Other platforms | macOS 26 and Apple silicon only. | Also runs on iOS and iPadOS, and older macOS. |
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 UTM
You need an architecture nobody else emulates — x86 Windows XP, PowerPC, RISC-V — or you want a free GUI and are comfortable configuring a machine. UTM also runs on iOS and iPadOS, which 1VMTool does not, and supports older macOS releases.
Where UTM frustrates people
- Snapshots have still never shipped in a release. A QEMU full-VM snapshot exposure landed on the main branch after v4.7.5 but is unreleased, and the tracking issue is still open; the workarounds are cloning the machine, using disposable mode, or reaching for qemu-img by hand.
- The configuration surface is essentially QEMU. The pitch is QEMU without the headache, but you still choose backend, machine type, display and input devices.
- No 3D acceleration for Windows guests, and only experimental OpenGL for Linux. The project states this plainly.
- GPL components are part of the bundle, which is fine for a free app but matters if you were hoping for a dependency-free binary.
Why someone moves to 1VMTool
- Snapshots are the entire reason 1VMTool exists, and they are the thing UTM has never shipped in a release.
- You want to create a machine without making a dozen device decisions first.
- You want a supported product with a single vendor rather than a community project.
- You want a CLI designed as an equal to the GUI rather than an afterthought.
Frequently asked questions
UTM is free and already uses Virtualization.framework — why 1VMTool?
Because UTM does not make snapshots the product and 1VMTool does. If you reset machines all day that is the entire difference. If you need to emulate Windows XP or PowerPC, stay on UTM — 1VMTool cannot do it at all.
Can UTM run x86 guests on Apple silicon?
Yes, through QEMU emulation, which is slow but real. 1VMTool will not: it runs ARM64 guests natively and does not emulate other instruction sets.
Can I play Windows games in UTM?
No. The project states there is no GPU acceleration for Windows guests. 1VMTool does not offer accelerated 3D either, so neither tool is the answer for games.
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.