
Description: Tox is an open-source, peer-to-peer instant messaging and video calling application focused on privacy and security. It offers end-to-end encryption for messages and calls to protect user data without relying on central servers.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Empathy is an open source instant messaging client that supports text, voice and video chat. It uses the Telepathy framework and integrates with the GNOME desktop environment. Empathy supports popular protocols like XMPP, IRC, Facebook Messenger, and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API