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

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