OpenSnitch

OpenSnitch is a GNU/Linux port of the Little Snitch application firewall.

18 Alternatives To OpenSnitch

Comodo Firewall

Comodo Firewall Pro - Secure your system against internal attacks such as Trojan viruses /…

Firestarter

Firestarter is an Open Source visual firewall program.
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GlassWire

Visualize network activity in detail, get notified when new apps access the network, look out for…

Gufw

Gufw is an easy, intuitive way to manage your Linux firewall.
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Little Snitch

Little Snitch is a firewall application that monitors and controls outbound internet traffic.
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Micro Snitch

Micro Snitch is an ultra-light menu bar application that operates inconspicuously. It helps figuring out if someone’s spying on you.
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Mobiwol

Mobiwol is a NoRoot Firewall

NetGuard

NetGuard
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NetWorx

NetWorx is a simple and powerful tool that helps you objectively evaluate your bandwidth situation.

Nufw

NuFW is a GPL extension to Netfilter (that is Linux firewall). It adds identity-based filtering, i.

Radio Silence

Radio Silence is a network monitor and firewall for the macOS. The software stops apps from making network connections. The firewall runs in the background and does not require an open window.

TinyWall

Lightweight and non-intrusive firewall

TripMode

Manage your Mac’s broadband usage while on a hotspot
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Windows 10 Firewall Control

Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.

ZoneAlarm Free Firewall

Personal Firewall software
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orWall

orWall will force selected applications through …

simplewall

Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on…

ufw

Ufw stands for Uncomplicated Firewall, and is program for managing a netfilter firewall.