apache-activemq -
5.8.0 (Apache ActiveMQ is the most popular and powerful open source messaging and Integration Patterns server)
hypertable -
0.9.6.5 (Hypertable is a high performance, open source, massively scalable database modeled after Bigtable, Google's proprietary, massively scalable database.)
zookeeper -
3.4.5 (ZooKeeper is a distributed, open-source coordination service for distributed applications.)