
Description: Telegram is a cloud-based instant messaging and voice over IP service. It offers end-to-end encrypted video calling, file sharing, and several other features. Telegram clients exist for both mobile and desktop systems.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Yahoo! Messenger is an instant messaging client and associated protocol provided by Yahoo!. It allows users to communicate in real-time through text, voice, video chat, and file sharing. Popular in the early 2000s, it has since declined in usage with the rise of smartphones and other messaging apps.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API