
Description: PingPal Messenger is a free instant messaging and video chat app. It allows users to connect with friends and family for real-time conversations and video calls. The app has features including group chats, media sharing, customizable profiles, and end-to-end encryption.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Threema is a secure messaging app that emphasizes privacy and security with end-to-end encryption for all communications. It allows you to message and call other Threema users.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API