Firejail

Linux · Self-hosted

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Freedom report

Two barsScore 6.3

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Firejail is ranked #11 of 22 in sandbox software on Freedom251. It runs on Linux, Self-hosted. There is a free plan.

Firejail plans and pricing

All plans

Firejail community project Free Linux desktop focus · GPL v2 · no commercial goals firejail.wordpress.com · 30 Sept 2026

Compared on sandbox software

Free plan: Yes
Isolation method: container
Persistent storage: Yes
Network controls: Yes
API or CLI access: Yes
Deployment: self_hosted

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The record

Sandboxing: Firejail is a SUID program that restricts untrusted applications using Linux namespaces and seccomp-bpf.
Kernel support: The software runs on Linux computers with a 3.x kernel version or newer.
Process isolation: Sandboxed processes receive private views of shared kernel resources including the network, process, and mount tables.
Application coverage: Firejail can sandbox servers, graphical applications, and user login sessions.
Security controls: Security filters include seccomp-bpf, communication protocol filtering, noroot user namespaces, Linux capabilities, D-BUS filtering, and optional AppArmor or SELinux support.
Access control: Mandatory Access Control blocks access to passwords, encryption keys, and private data for more than 1000 desktop applications.
Security profiles: More than 1000 application profiles are available by default in /etc/firejail.
Network isolation: Firejail can create an isolated TCP/IP stack with its own routing table, firewall, and interfaces.
Network monitoring: The software can inspect network traffic with its nettrace feature for analyzing and monitoring application behavior.
AppImage support: Firejail natively supports AppImage packages through the --appimage option.
GUI companion: Firetools is a Qt5 graphical interface providing a sandbox launcher, system-tray integration, editing, management, and statistics.
DNS companion: FDNS is a DNS-over-HTTPS proxy that uses DoH services from non-logging providers.
Desktop integration: Running sudo firecfg integrates Firejail with application menus and file-manager launches.
Target users: The project identifies home users and Linux beginners as its target market and describes Firejail as a consumer product rather than an enterprise product.
Price from: Free

Where it ranks on Freedom251

Best Sandbox Software in 2026#11 of 22

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Sources

firejail.wordpress.com· checked 30 Sept 2026
firejail.wordpress.com/features-3/· checked 30 Sept 2026
firejail.wordpress.com/download-2/· checked 30 Sept 2026
firejail.wordpress.com/support/· checked 30 Sept 2026