Alternatives to Vallum

Open-source firewall to block unknown outgoing connections

Firewall app

Host-based application firewall

Stand alone ad blocker

OpenVPN client with AppleScript support

Monitors common persistence locations

Network monitor and firewall

OpenVPN and WireGuard client

VPN for privacy and security

Simple application that will prevent iTunes or Apple Music from launching

Zero trust network access platform

Analysis tool for security research and malware triage