Gas Mask - Gas Mask is simple hosts file manager for Mac OS X.
Unity - The multiplatform game creation tools for everyone.
SwitchHosts - Free and open source hosts management & switching app
Godot Engine - Feature-packed 2D and 3D open source game engine.
BlueLife Hosts Editor - BlueLifeHosts editor is a Portable freeware application for editing windows Hosts file ,(easily add/delete , Block , Update domain names)
Blender - Blender is the open source, cross platform suite of tools for 3D creation.