GlassWire

GlassWire is a free firewall software that safeguards your computer and privacy by monitoring network activity. Its built-in firewall tool allows you to block unknown network connections. GlassWire also assists with server monitoring and protection.

GlassWire helps you monitor and control your mobile carrier data usage and WiFi Internet to identify apps that waste data, act suspiciously, and slow down your phones' speed. It helps you stay within your carrier data limits with an intuitive user interface.