A list of open source java projects to contribute to.
1.Elasticsearch
Elasticsearch is a distributed, multitenant-capable full-text search engine developed in Java and meant to be used on cloud platforms.ElasticSearch is based on Apache Lucene, which is a free and open-source full-featured text search engine library written entirely in Java. It is supported by the Apache Software Foundation and is released under the Apache Software License.
2.Strongbox
Strongbox is an OpenSource artifact repository manager written in Java. The developers aim to provide an easy and reliable platform for hosting binary artifacts, regardless of the user's repository layout. The goal of the project is to build a universal repository manager that can host and serve artifacts in any of the major formats.
3.JabRef
JabRef is an open source graphic cross-platform citation and reference management system. Written in Java, it uses BibTeX (BibTeX is a specialized software for creating formatted bibliography lists) and BibLaTeX as its native formats. JabRef stands for Java, Alver, Batada, Reference.
4.XWiki
XWiki is a free software enterprise wiki platform written in Java. It is focused on extensibility and allowing users to structure the content and program software access to a wiki database.
Basically, XWiki is just a wiki engine that allows you to create new applications in wiki pages.
5.Zerocode
Zerocode is a free and open source API automation and load testing framework built using core Java JUnit components. It allows developers to create and maintain test cases in the most simple and quick way possible.