
Description: Gizmo5 is a VoIP software that allows users to make calls over the internet. It provides features like instant messaging, voice calls, video calls, screen sharing, and more. Gizmo5 uses SIP protocol and allows connecting to traditional phone networks.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Linphone is an open source voice over IP (VoIP) phone and instant messaging client for Linux, Windows, macOS, iOS and Android. It supports standard voice and video calls as well as instant messaging between Linphone clients.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API