
Description: Google Phone is a dialer app developed by Google as the default calling app for Android. It provides basic call functionality as well as integration with contacts, voice mail, call screening and spam protection.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: CallzApp is a cloud-based call center and phone system designed for small businesses. It includes features like call routing, IVR menus, call recording, call analytics, and more. Can be used as a full-featured call center or simply to route calls to mobiles and landlines.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API