NetPatch Firewall
NetPatch Lab
InternetGuard Data Saver Firew
SheikhSoft
Firewalla
Firewalla Inc.
NetGuard - no-root firewall
Marcel Bokhorst, FairCode BV
Net Blocker Pro
The Simple Apps
Firewall Security - No Root
Protectstar Inc.
GlassWire Data Usage Monitor
Domotz Inc
PortDroid
Stealthcopter
XPrivacyLua Pro
IoPT: Network Security Scanner
EnsoTech ltd