
Description: Signal is a free, open source encrypted messaging and voice calling app. It allows you to communicate privately and securely through end-to-end encryption. Signal supports both individual and group chats and works seamlessly between Android, iOS and desktop platforms.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Bridgefy is an offline messaging app that allows users to communicate without an internet connection or cellular service using Bluetooth and mesh networking technology. It forms connections between nearby devices to transmit messages over distance.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API