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microsandbox vs krunvm: catalog facts
microsandbox	krunvm
Free The local runtime is free and open source under Apache-2.0; managed cloud access is by…	Free Free to use from its GitHub repository.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Separate kernel per sandbox for stronger isolation than containers No daemon, root or account needed locally	Builds microVMs directly from OCI images Fast boot with a small footprint
Young project Cloud offering is still in private beta	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
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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