QEMU as a Linux alternative to VirtualBox
Updated
Our verdict
QEMU, especially when combined with KVM, can replace VirtualBox for most Linux users who need to run multiple guest OS instances. It supports x86 and ARM, offers snapshots, USB and network passthrough, shared folders via virtfs, and headless operation. It is more flexible and often faster on Linux, but its configuration is more manual and the GUI is less polished than VirtualBox’s. It is best suited for power users, developers, and server admins who are comfortable with command‑line tools or libvirt.
- License
- GPL-2.0
- Price
- Free
- Latest version
- 11.1.2
- Rating
- —
What works the same
- Both can run x86 and ARM guests
- Both support snapshots and state management
- Both provide USB and network passthrough
- Both allow shared folders between host and guest
- Both can be operated headlessly
What is different
- QEMU requires KVM for near‑native speed; VirtualBox has built‑in acceleration
- QEMU’s default UI is command‑line or libvirt‑based; VirtualBox has a rich GUI
- QEMU supports a wider range of guest architectures (RISC‑V, PowerPC)
- QEMU can emulate many more hardware devices, but configuration is more complex
- VirtualBox offers easier VM import/export via .ova files; QEMU uses raw or qcow2 images
Opening your VirtualBox files
VirtualBox .vdi files can be used directly with QEMU by specifying the format, e.g., qemu-img convert -f vdi -O qcow2 file.vdi new.qcow2. Exporting a QEMU image to a .vdi is possible with qemu-img, but the process is manual. For .ova packages, you need to extract the disk image and create a new QEMU VM.
Switching from VirtualBox to QEMU, step by step
- 1. Install QEMU and libvirt on your Linux distro.
- 2. Convert existing VirtualBox VDI to QCOW2: qemu-img convert -f vdi -O qcow2 old.vdi new.qcow2.
- 3. Create a new VM with virt-install or virt-manager, pointing to new.qcow2.
- 4. Reconfigure network, USB, and shared folder settings in virt-manager.
- 5. Test the VM, then delete the old VirtualBox VM.
Key features of QEMU
- Full-system emulation for x86, ARM, RISC-V, and more
- Hardware acceleration via KVM for near-native performance
- Supports multiple disk image formats (qcow2, raw, vdi)
- Network bridging and NAT support
- USB passthrough and device emulation
- Snapshot support for quick state saving/restoring
- Integration with libvirt for advanced management
- Wide hardware compatibility including GPU passthrough
How to install QEMU on Linux
sudo apt install qemusudo apt install qemusudo dnf install qemusudo pacman -S qemu-audio-dbussudo zypper install qemuFrequently asked questions
Does QEMU support VirtualBox snapshots?
QEMU has its own snapshot mechanism; you cannot directly import VirtualBox snapshots, but you can convert the base image and create new snapshots in QEMU.
Is QEMU suitable for running Windows guests?
Yes, QEMU/KVM can run Windows guests with near‑native performance, provided the host CPU supports virtualization extensions.
Can I use QEMU on a headless server?
Absolutely. QEMU can be launched in headless mode, controlled via libvirt or command line, making it ideal for server environments.
2 other alternatives to VirtualBox
Virtual Machine ManagerVirtual Machine Manager is a graphical front‑end for libvirt that lets you create, run, and monitor KVM, Xen…Open sourceFreeFlatpakVirtual Machine Manager vs VirtualBoxGNOME BoxesGNOME Boxes is a lightweight virtual machine manager for GNOME, simplifying VM creation and use.Open sourceFreeGNOME Boxes vs VirtualBox