VirtualBox vs QEMU
Both are free virtualization tools. Here is how they actually differ.
VirtualBox and QEMU at a glance
| Feature | VirtualBox | QEMU |
|---|---|---|
| Developer | Oracle | QEMU project |
| Licence | Open Source | Open Source |
| Cost | Free | Free |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Mobile | No | No |
| Source code | Public | Public |
VirtualBox: what it's good at
VirtualBox runs complete guest operating systems inside your current one — ideal for testing software safely, running legacy applications, or learning Linux without touching your existing installation.
- Runs Windows, Linux and BSD guests
- Snapshots to roll back a machine instantly
- Shared folders and clipboard with the host
- Free and open source
QEMU: what it's good at
QEMU both virtualises and fully emulates hardware, so it can run operating systems built for entirely different processor architectures. It underpins a great deal of Linux virtualisation infrastructure.
- Emulates multiple CPU architectures
- Near-native speed with KVM acceleration
- Extensive virtual hardware support
- Foundation of many virtualisation stacks
Which should you choose?
Both are free, so the honest answer is that you can install either and decide for yourself — that is the advantage of free software over a paid trial.
Both run on Windows, macOS, Linux. Both are open source, so neither locks you in.
We deliberately do not publish a star rating for either. We have no way to verify a rating that would be honest at scale, and an invented one would be worse than none — so we give you the facts and let you decide.
Frequently asked questions
Is VirtualBox better than QEMU?
Neither is universally better. VirtualBox run Windows, Linux and other systems in a window, while QEMU powerful machine emulator and virtualizer. The right pick depends on your platform and workflow.
Are both really free?
VirtualBox is open source and QEMU is open source. Both can be downloaded without paying.
Can I install both?
Yes. Since neither costs anything, installing both and comparing them on your own files is usually the fastest way to decide.