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Firejail vs Bubblejail: catalog facts
Firejail	Bubblejail
Free Free and open source.	Free Free and open source.
Linux, Command line	Linux
Sandboxes existing applications without modifying them Uses kernel namespaces and seccomp-bpf filtering	Uses bubblewrap rather than a setuid sandbox Graphical tool for managing sandbox permissions
Linux only Runs as a SUID program, which some users consider a risk in itself	Linux only Smaller project than Firejail or Flatpak
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 October 1, 2026

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