
Description: Apache Vysper is an open source XMPP server written in Java that can be embedded into Java applications to provide instant messaging and presence capabilities.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Openfire is an open source instant messaging and chat server. It uses the XMPP protocol and can be configured to work with many chat clients such as Spark, Pidgin, and Web clients. It is written in Java and has features like group chat, messaging archive, and plugins.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API