
Description: Messup Chat is a free and open-source messaging platform that allows real-time communication. It has features like group chats, media sharing, emoji reactions, threaded conversations, search, and customizable notifications.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Lime Talk is an open-source, self-hosted alternative to Zoom and Skype focused on security and privacy. It supports HD video conferencing, screen sharing, messaging, virtual backgrounds and other standard features expected of a video chat app.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API