OpenSnitch Alternatives

Lightweight and non-intrusive firewall

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

LuLu is the free open-source macOS firewall that aims to block unauthorized (outgoing) network...

Personal Firewall software

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

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

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

Manage your Mac's broadband usage while on a hotspot

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.

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

NetGuard

Free firewall download,full firewall source code,Internet security software download