TinyWall - Lightweight and non-intrusive firewall
HostsMan - HostsMan is a freeware hosts file manager and editor. Built-in hosts file updater
simplewall - Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on...
Gas Mask - Gas Mask is simple hosts file manager for Mac OS X.
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...