QEMU is an open-source machine emulator and virtualiser, released under the GNU General Public License version 2. Users install and run it on their own systems rather than through a hosted service. Multipass uses QEMU as the hypervisor on Linux, which illustrates its role as a building block for other tools. The source code is published openly for review, modification and rebuilding.
QEMU has no company behind it. The project is a member of the Software Freedom Conservancy, a non-profit based in New York City, and no foreign owner is named. Because QEMU is software that runs on the user's own systems, the sovereignty question for a European organisation concerns the software supply chain rather than data location. Its code can be inspected and built independently, while the governance and legal framework sit with a US non-profit.