
Description: Google Duo is a video chat mobile app developed by Google. It allows users to make video calls in high definition between Android and iOS devices. Key features include Knock Knock which shows live video of the caller before answering, end-to-end encryption, and the ability to switch between Wi-Fi and cellular data during calls.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Nextcloud Talk is an open source video conferencing and communication solution designed for private clouds. It enables secure audio/video calls, chat, and screensharing capabilities out-of-the-box.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API