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OpenSnitch

Free plan Open source LinuxSelf-hosted

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OpenSnitch's own site

Plans

PlanBilled and limitsPrice
OpenSnitchGNU/Linux · self-hosted · GPL-3.0Free

As github.com lists them, read 30 Sept 2026. The maker's own page has the final word.

Facts from OpenSnitch's own pages

Application rules
Yes · github.com, 22 Sept 2026
Application type
Interactive application firewall · github.com, 28 Sept 2026
Architecture support
Release assets include x86_64, i386, armhf and arm64 daemon packages. · github.com, 30 Sept 2026
Block-list limitation
Block lists may not work when the system uses systemd-resolved. · github.com, 30 Sept 2026
Block lists
It can block system-wide ads, trackers and malware domains, and supports domain, IP, network, regular-expression and MD5 lists. · github.com, 30 Sept 2026
Central management
A centralized GUI can manage multiple nodes. · github.com, 28 Sept 2026
Project community
The project invites users to join its server community. · github.com, 28 Sept 2026
Compatibility limit
The v1.8.0 release says its GUI is not compatible by default with Linux Mint 21.2 or earlier, Ubuntu 22.04 or earlier, and OpenSUSE 15.5 or earlier. · github.com, 30 Sept 2026
Connection alerts
Yes · github.com, 22 Sept 2026
Connection filtering
It interactively filters outbound connections. · github.com, 30 Sept 2026
Distribution support
Packages are provided for Debian/Ubuntu-style DEB systems, RPM systems, Arch Linux and NixOS. · github.com, 30 Sept 2026
Documentation support
The project directs users to documentation for detailed information. · github.com, 28 Sept 2026
Domain blocking
It can block ads, trackers, or malware domains system wide. · github.com, 30 Sept 2026
Downloads
The project README directs users to download DEB or RPM packages from its releases page. · github.com, 30 Sept 2026
Encrypted nodes
Since v1.6.1, node communications can be encrypted with TLS/SSL certificates using simple, tls-simple or tls-mutual authentication. · github.com, 30 Sept 2026
Firewall configuration
The GUI can configure the system firewall using nftables. · github.com, 28 Sept 2026
Firewall controls
The GUI can configure system firewall rules and inbound policy using nftables; iptables rules cannot be configured from the GUI. · github.com, 30 Sept 2026
Free plan
Yes · github.com, 22 Sept 2026
GUI launcher
The GUI can be started with opensnitch-ui or from the Applications menu. · github.com, 28 Sept 2026
Inbound policy
The system firewall configuration can apply a restrictive inbound policy that denies inbound connections while allowing established and localhost traffic. · github.com, 30 Sept 2026
License
The repository identifies the project license as GPL-3.0. · github.com, 30 Sept 2026
Linux distributions
The installation wiki documents packages or installation steps for Debian/Ubuntu, RPM distributions, Arch Linux, and NixOS. · github.com, 30 Sept 2026
Log formats
The syslog logger supports RFC3164, RFC5424, CSV, and JSON formats. · github.com, 30 Sept 2026
Current maintainers
The repository provides a link to the current OpenSnitch maintainers. · github.com, 28 Sept 2026

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