
Description: Google Voice is a telephony service by Google that provides a phone number for making affordable calls within the U.S. and Canada. It has features like voicemail transcription, call screening, conference calling, and text messaging.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Ring4 is a free and open source video conferencing application that focuses on security and privacy. It supports end-to-end encryption for video calls, messaging, file sharing and other features. Ring4 is cross-platform and offers integration with other communication services.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API