
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: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Dingtone is a free calling and texting app that allows users to make calls and send texts over a data connection instead of a cellular network. It uses VoIP technology to route calls and messages, providing an alternative way to communicate without using carrier minutes or texts.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API