
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: Tigase is an open source XMPP server written in Java that provides advanced features like clustering, pubsub, and web administration out of the box. It is secure, scalable, and customizable.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API