
Description: Facebook Messenger is a popular messaging app developed by Facebook. It allows users to send messages, photos, videos, and make voice and video calls to contacts. Key features include group chats, games, payments and using bots.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: XMPP (Extensible Messaging and Presence Protocol) is an open standard communication protocol for message-oriented middleware based on XML. It enables the near-real-time exchange of data between any two or more network entities.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API