HostsMan - HostsMan is a freeware hosts file manager and editor. Built-in hosts file updater
TinyWall - Lightweight and non-intrusive firewall
Gas Mask - Gas Mask is simple hosts file manager for Mac OS X.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
SwitchHosts - Free and open source hosts management & switching app
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.