
Description: Viber is a free messaging and calling app for smartphones. It uses your phone number to connect you with people in your contacts and allows free calls, texts, photos and video messages over WiFi.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Lemon Group Messenger is a free and open-source instant messaging app for groups. It allows users to chat in groups up to 500 people, make voice and video calls, share photos, audio, video and other files securely. It works across platforms like Windows, Mac, Linux, Android and iOS.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API