TinyWall - Lightweight and non-intrusive firewall
HostsMan - HostsMan is a freeware hosts file manager and editor. Built-in hosts file updater
SonicWall - SonicWall security solutions protects your network, systems, users and data from cyber threats.
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.
SwitchHosts - Free and open source hosts management & switching app