Apps similar to OpenSnitch include Portmaster, which is open source with a free version. Other options are Pi-hole, simplewall, GlassWire and NetGuard. There's no shortage of Firewalls like OpenSnitch, with more than 25 alternatives for Linux, Windows, Mac, Android and iPhone.
Perfects the Windows Firewall offering additional security. Get the most out of your Windows firewall, create new security rules for your online applications, alerts you to anomalies with real-time protection.
Germany
EU
Bouncer is an application to help you choose the correct firewall zone for wireless connections. When you connect to a new network, Bouncer will open a window prompting you for what kind of network (eg home, public, work) it is.
DataCever allows you to monitor and control internet traffic , allowing you to know what consumes your data plan.
Experimental Rust/Aya XDP + TC firewall and traffic analyzer. Low-overhead packet filtering with release evidence still pending for production claims.
Italy
