
Description: Gas Mask is a free and open source system monitor and firewall configuration tool for macOS. It allows users to easily view and control network connections, configure a software firewall, monitor system resources, and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: SwitchHosts is a free, open-source application for Windows, Mac and Linux that allows you to easily manage your hosts file. It enables quickly switching between different host configurations with a single click, helping test websites, access sites blocked in your country, and manage development/staging environments.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API