HostsMan - HostsMan is a freeware hosts file manager and editor. Built-in hosts file updater
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
Gas Mask - Gas Mask is simple hosts file manager for Mac OS X.
TinyWall - Lightweight and non-intrusive firewall
SwitchHosts - Free and open source hosts management & switching app
Emsisoft Online Armor Firewall - Emsisoft Online Armor Firewall is a freemium online firewall protection system by the Emsisoft that is based on the own independent protection technology of the Emsisoft.