
Description: SimpleX Chat is a free, open source instant messaging application allowing users to message, voice and video chat securely without disclosing their personal phone numbers. SimpleX is an alternative for messaging apps like WhatsApp, Telegram, Viber, Skype, Facebook messenger, etc. SimpleX aims to set a new standard for privacy and security.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

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: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API