
Description: Nimbuzz is a free messaging and calling app for smartphones and desktop. It allows users to connect with friends, groups and communities worldwide across various platforms including MSN, Yahoo, AIM, ICQ, Hyves, GTalk and Facebook.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: WhatsApp is a popular cross-platform instant messaging and voice over IP service owned by Meta. It allows users to send text messages, voice messages, video calls, images, documents and user location free over an internet data connection.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API