1. Apache Cassandra. http://cassandra.apache.org/. Apache Cassandra. http://cassandra.apache.org/.
2. Apache Hadoop. http://hadoop.apache.org/. Apache Hadoop. http://hadoop.apache.org/.
3. Apache HBase. http://hbase.apache.org/. Apache HBase. http://hbase.apache.org/.
4. Apache Oozie. http://incubator.apache.org/oozie/. Apache Oozie. http://incubator.apache.org/oozie/.
5. Apache Crunch. http://crunch.apache.org/. Apache Crunch. http://crunch.apache.org/.