
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: Meebo was a free web-based instant messaging client that allowed users to access multiple IM accounts and networks in one interface. It supported popular platforms like AOL Instant Messenger, Yahoo! Messenger, MSN Messenger, and others. Meebo officially closed in 2012 after being acquired by Google.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API