As soon as you’re connected to the Internet, your apps can send whatever they want to wherever they want, unnoticed by you, because all of this happens invisibly under the hood.
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+1
OpenSnitch Alternatives
OpenSnitch is described as 'Firewall for Linux providing interactive outbound filtering, blocking ads and malware domains, configurable via GUI, with centralized node management' and is a Firewall in the security & privacy category. There are more than 25 alternatives to OpenSnitch for a variety of platforms, including Linux, Mac, Windows, 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 NetGuard.
Alternatives list
44 Little Snitch Mini alternatives
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.
+6
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).
Gufw vs OpenSnitch Comments
not an application firewall
the ufw/gufw doesn't help to monitor new connections from your system to "outerspace"
- Gufw is Free and Open Source
All the functionalities of a modern Next-Gen firewall in few clicks: MultiWAN, Deep Packet Inspection, VPNs, Threat Protection.
+4
40 ZoneAlarm Firewall alternativesProvides 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.
+1
43 Firewalla alternativesFirewalla is a vital security addition to every home and small business with network and IoT devices.
+4
Firewalld provides a dynamically managed firewall with support for network/firewall zones that define the trust level of network connections or interfaces. It has support for IPv4, IPv6 firewall settings, ethernet bridges and IP sets.
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.
+2
Receive notifications whenever a new program connects to the network, or when it's modified
PPicosnitch vs OpenSnitch Comments
saucysalamanderNot 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 Source
- Picosnitch is a Network Monitor
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United States
Ukraine
it's a Firewall not an application Firewall