Open source machine emulator and virtualizer

The QEMU Project includes the QEMU open source machine emulator and virtualizer and also acts as an umbrella organization for the KVM Linux kernel module, Jailhouse partitioning hypervisor, and the rust-vmm community.

When used as a machine emulator, QEMU can run operating systems and programs made for one machine (e.g. an ARM board) on a different machine (e.g. your own PC). By using dynamic translation, it achieves very good performance.

When used as a virtualizer, QEMU achieves near native performances by executing the guest code directly on the host CPU. QEMU supports virtualization when executing under the Xen hypervisor or using the KVM kernel module in Linux. When using KVM, QEMU can virtualize x86, ARM, server and embedded PowerPC, and S390 guests.

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  • linux
  • kvm
  • c
  • virtualization
  • rust


  • Cloud
  • emulator
  • hypervisor
  • lowlevel
  • code generation
  • compiler
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QEMU 2020 Projects

  • Filip Božuta
    Extend linux-user syscalls and ioctls
    Very often, the QEMU emulator is used to emulate user level processes that are compiled for a different architecture set than the "host" machine on...
  • Ahmed Karaman
    TCG Continuous Benchmarking
    QEMU's emulator allows running operating systems and binaries compiled against one architecture (e.g. Linux ARM) on a host with a different...
  • César Belley
    Virtual FIDO/U2F security key on Qemu
    U2F is an open authentication standard used worldwide. It enables relying parties exposed to the internet to offer a strong second factor option for...