Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.
GroundWork - Payment solution for youth sports team and clubs
NetGuard - NetGuard
Glextor AppManager - Glextor AppManager - application organizer, manager, launcher for Android.
Portmaster - Is a Privacy Modular Privacy App which includes a "DNS over TLS" feature as well as an "Application Firewall".
NCSettings - NCSettings is a stylish Notification Center toggle widget for jailbroken iPhones.