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nEMU vs libvirt: catalog facts
nEMU	libvirt
Free Free and open source under the BSD-2-Clause license.	Free Free and released under open source licenses.
macOS, Linux, Command line	Windows, macOS, Linux, Command line
Manage VM lifecycle and settings in a terminal interface Connect to virtual machines through VNC or SPICE	One management layer for many hypervisors Documented XML formats for domains, networks and storage
Requires QEMU	Mainly an API and daemon; a graphical manager is a separate program XML configuration takes time to learn
Downloadable app	Downloadable app
Open source	Open source
License: BSD-2-Clause	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.