
Description: Tango is a free and open source, cross-platform program for video calling and instant messaging using Voice over IP. It offers encryption, group conversations, file transfers, customizable user profiles, and other features.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Highfive is a video conferencing and meetings software designed for small to medium businesses. It provides HD video and audio, screen sharing, messaging, calendar integrations, and support for up to 25 meeting participants.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API