OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

A high performance caching library for Java

An XMPP server licensed under the Open Source Apache License.

A modular and portable open source XMPP client library written in Java for Android and Java (SE) VMs

Elegant parsing in Java and Scala - lightweight, easy-to-use, powerful.

Java REST API Client for the Openfire to manage Openfire instances by sending an REST/HTTP request to the server