The ASF is made up of nearly 150 top level projects which cover a wide range of technologies. Chances are if you are looking for a rewarding experience in Open Source, you are going to find it here.
Test-Framework for Testing Ant Tasks and Types
The Ant Library provides Ant tasks for testing Ant task, it can also be used to drive functional and integration tests of arbitrary applications with Ant.
Apache River software provides a standards-compilani JINI service.
Apache River software provides a JINI service, which is a service oriented architecture that defines a programming model which both exploits and extends Java technology to enable the construction of secure, distributed systems consisting of federations of services and clients. Jini technology can be used to build adaptive network systems that are scalable, evolvable and flexible as typically required in dynamic computing environments.
Open-source software for transferring content between repositories or search indexes
ManifoldCF is an effort to provide an open source framework for connecting source content repositories like Microsoft Sharepoint and EMC Documentum, to target repositories or indexes, such as Apache Solr , OpenSearchServer or ElasticSearch. ManifoldCF also defines a security model for target repositories that permits them to enforce source-repository security policies.