OpenSnitch is a free, open-source, and cross-platform application designed to help users protect their privacy and security on their devices. It uses a combination of port-based network filtering and application-level monitoring to protect users from malicious activities. OpenSnitch is a network-level firewall that can be used to monitor, analyze, and block suspicious incoming and outgoing network traffic. It can detect and block malicious network connections, as well as limit access to certain applications and websites. OpenSnitch also provides users with enhanced control over their devices by allowing them to create custom rules for specific applications. Additionally, OpenSnitch provides users with detailed reports on their network activity and allows them to customize the level of protection they receive.
It is a Firewall not a Firewall application.