libvirt is an open-source toolkit and API for managing virtualisation platforms. It provides a stable C interface and bindings for languages including Python, Perl and Go. Management applications use it to control KVM and QEMU, Xen, VMware ESX, LXC and BHyve. The software runs on Linux, FreeBSD, Windows and macOS, and organisations deploy it on their own hosts.
libvirt is licensed under the LGPL-2.1, with some components under GPL-2.0, and it is developed by a community of contributors. Its main sponsor is Red Hat, which is headquartered in Raleigh, North Carolina, and has been part of IBM since 2019. Other organisations and individuals also contribute. For a European organisation, the management layer is open and can be inspected, but the principal sponsor is American, which belongs in any dependency assessment.