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: software
Pricing: Free
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: software
Pricing: Open Source