OpenSnitch Alternatives

OpenSnitch is described as 'GNU/Linux application firewall' and is a Firewall in the security & privacy category. There are more than 25 alternatives to OpenSnitch for a variety of platforms, including Linux, Windows, Mac, Android and iPhone apps. The best OpenSnitch alternative is Portmaster, which is both free and Open Source. Other great apps like OpenSnitch are simplewall, Pi-hole, GlassWire and Fort Firewall.

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OpenSnitch alternatives page was last updated Apr 27, 2026

Traffic Light
2 likes
Traffic Light is an open-source tool for tracking your network usage while ensuring total privacy. Inspired by Internet Speed Meter and GlassWire.
Cost / License
Free
Open Source (GPL-3.0)
Platforms
Android
F-Droid
Is Traffic Light a good alternative to OpenSnitch?
Gufw
52 likes
Gufw is an easy, intuitive way to manage your Linux firewall. It supports common tasks such as allowing or blocking pre-configured, common p2p, or individual ports port(s), and many others! Gufw is powered by Uncomplicated Firewall (ufw).
Cost / License
Free
Open Source (GPL-3.0)
Application type
Firewall
Origin
Spain
EU
Platforms
Linux
Python
Is Gufw a good alternative to OpenSnitch?

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3comments
Gufw vs OpenSnitch Comments

Guest
Negative commentApr 26, 2018
8
it's a Firewall not an application Firewall
Review by a new / low-activity user.
Guest
Negative commentMar 3, 2025
0
not an application firewall
Review by a new / low-activity user.
Guest
Negative commentJan 25, 2021
0
the ufw/gufw doesn't help to monitor new connections from your system to "outerspace"
Review by a new / low-activity user.
Gufw is Free and Open SourceOpenSnitch is also Free and Open Source
U
U
ufw
28 likes
Ufw stands for Uncomplicated Firewall, and is program for managing a netfilter firewall. It provides a command line interface and aims to be uncomplicated and easy to use.
23 ufw alternatives
Cost / License
Free
Open Source
Application type
Firewall
Origin
Australia
Platforms
Linux
U
Is ufw a good alternative to OpenSnitch?
Ad
GlassWire
Visualizes real-time and historical network activity, delivers alerts for suspicious behavior and unknown connections, manages firewall rules, reports DNS and system changes, identifies remote hosts, monitors app usage, supports ...

https://www.glasswire.com
Learn More
NethSecurity
1 like
All the functionalities of a modern Next-Gen firewall in few clicks: MultiWAN, Deep Packet Inspection, VPNs, Threat Protection.
Cost / License
Free
Open Source
Application type
Firewall
Origin
Italy
EU
Platforms
Linux
+4
Is NethSecurity a good alternative to OpenSnitch?
ZoneAlarm Firewall
38 likes
Provides two-way firewall protection by blocking unauthorized network access, detecting intrusions, hiding devices from threats, stopping viruses, spyware, and data theft, offering real-time alerts, customizable rules, and simple setup with light system impact.
39 ZoneAlarm Firewall alternatives
Cost / License
Freemium
Proprietary
Application type
Firewall
Origin
United States
Platforms
Windows
Android
iPhone
+1
Is ZoneAlarm Firewall a good alternative to OpenSnitch?
TulaByte - System Tor & Firewall
8 likes
A fundamental re-design of user Data Privacy. Your multi-tool for online protection. So easy your grandma could use it. Costs less than a cup of coffee per year.
Cost / License
Freemium
Open Source
Application types
Ad Blocker
Privacy Tool
Origin
United Kingdom
Platforms
iPhone
iPad
+6
Is this a good alternative to OpenSnitch?
FireWally
6 likes
FireWally is a free firewall app for Mac, powered by Apple Intelligence and designed for anyone who wants to take full control of their online activity.
Cost / License
Free
Proprietary
Application types
Firewall
Network Monitor
Origin
Ukraine
Platforms
Mac
+2
Is FireWally a good alternative to OpenSnitch?
Firewalla
Like
Firewalla is a vital security addition to every home and small business with network and IoT devices.
43 Firewalla alternatives
Cost / License
Paid
Proprietary
Application types
Ad Blocker
Firewall
Origin
United States
Platforms
iPhone
iPad
Android
+4
Is Firewalla a good alternative to OpenSnitch?
Lockdown Privacy
8 likes
Lockdown Privacy is an Open Source and free firewall for your iOS device. We built the product to help protect users from app developers and analytics companies that are monetizing user data without consent or transparency.
Cost / License
Freemium
Open Source (GPL-3.0)
Application types
Ad Blocker
Privacy Tool
Origin
United States
Platforms
Mac
iPhone
iPad
Is Lockdown Privacy a good alternative to OpenSnitch?
Vallum
Like
Monitors application connections and offers to pass or block these. It can be used to increase privacy or to transparently protect non-admin users from unwanted connections on multi-user macs.
Cost / License
Paid
Proprietary
Application type
Firewall
Origin
Italy
EU
Platforms
Mac
+1
Is Vallum a good alternative to OpenSnitch?
P
P
Picosnitch
4 likes
Receive notifications whenever a new program connects to the network, or when it's modified
Cost / License
Free
Open Source (GPL-3.0)
Application types
Network Monitor
Privacy Tool
Platforms
Linux
P
Is Picosnitch a good alternative to OpenSnitch?

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1comment
Picosnitch vs OpenSnitch Comments

saucysalamander
Positive commentApr 14, 2022
0
Not a firewall, but it is more reliable at "snitching" on programs that try to disguise themselves or evade filters/detection by tracking hashes, process hierarchy, and logging bandwidth. It is also more tamper resistant by letting you store the logs on another system.
P
Picosnitch is Free and Open SourceOpenSnitch is also Free and Open Source
Stronghold
1 like
Easily configure macOS security settings from the terminal.
Cost / License
Free
Open Source (MIT)
Alerts
Discontinued
Platforms
Mac
Is Stronghold a good alternative to OpenSnitch?