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Firecracker vs krunvm: catalog facts
Firecracker	krunvm
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free to use from its GitHub repository.
Linux, Command line	macOS, Linux, Command line
Targets container and function-based server infrastructure.	Builds microVMs directly from OCI images Fast boot with a small footprint
Requires Linux virtualization support and low-level configuration.	Command-line only Depends on libkrun and buildah being installed
Downloadable app	Downloadable app
Open source	Closed source
License: Apache-2.0	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 September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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