Configure Ubuntu’s Uncomplicated Firewall through Gufw, a graphical firewall interface.
Open source
24 alternativesOpenSnitch
Control outgoing network connections on Linux with OpenSnitch, an interactive application firewall.
About OpenSnitch
OpenSnitch is a GNU/Linux application firewall that watches outgoing connections and lets you decide how they are handled. It suits reviewing and controlling network access on Linux through a graphical interface. The project provides deb and rpm packages, and the interface is launched with opensnitch-ui.
Pricing is not clearly stated.
Key features
- System-wide blocking of ad, tracker or malware domains
- nftables firewall configuration from the GUI
- Input policy and inbound service configuration
- Centralized management of multiple nodes
- SIEM integration
Best for: Reviewing and controlling outgoing connections on Linux.
Good for
- GPL-3.0 licensed.
Watch out for
- Requires GNU/Linux.
OpenSnitch at a glance
- Category
- Privacy & Security › Desktop & OS Privacy
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Platforms
- Linux
- Details verified
- Oct 22, 2026 · Official source
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
OpenSnitch alternatives
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Monitor and control outgoing network connections on macOS with LuLu, a free, open-source firewall.
Monitor network traffic on Linux and BSD from the console with vnStat, using interface statistics.
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OpenSnitch FAQ
How do I install the deb or rpm packages?
For deb packages, run sudo apt install ./opensnitch*.deb ./python3-opensnitch-ui*.deb. For rpm packages, run sudo dnf install opensnitch*.rpm.
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