
Description: JusTalk is a free, cross-platform video calling and instant messaging app. It allows you to make HD video and voice calls, send messages, photos, stickers and files to other JusTalk users for free.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Skype is a popular communication software that allows free voice and video calls, instant messaging, and file sharing over the internet between users. It works on computers, mobile devices, and smartphones.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API