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Firejail vs Sandboxie-Plus: catalog facts
Firejail	Sandboxie-Plus
Free Free and open source.	Free Free and open source under the GPL 3.0. Some advanced features are reserved for supporters…
Linux, Command line	Windows
Sandboxes existing applications without modifying them Uses kernel namespaces and seccomp-bpf filtering	Filesystem and registry changes stay inside the box and can be discarded Unlimited boxes, run alone or at the same time
Linux only Runs as a SUID program, which some users consider a risk in itself	Windows 7 64-bit or newer only Some programs detect the sandbox and refuse to run
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 21, 2026

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