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Fence vs nono: catalog facts
Fence	nono
Free Free and open source under the Apache-2.0 license.	Free Free and open source under the Apache-2.0 license.
macOS, Linux, Command line	macOS, Linux, Command line
Blocks network access by default Applies configurable filesystem restrictions	Per-tool sandbox policies Keeps real credentials outside agent processes
Linux requires bubblewrap and socat bpftrace is needed for filesystem violation monitoring	Windows support requires WSL2
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is 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 October 8, 2026

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