Apache ZooKeeper - Home. Apache Tez – Welcome to Apache Tez. Tez - Spark - Lightning-Fast Cluster Computing. Welcome to Apache Pig! Apache Mahout: Scalable machine learning and data mining. Apache Hive TM. HBase – Apache HBase Home. Hama - a general BSP framework on top of Hadoop. Chukwa - Welcome to Apache Chukwa. The Apache Cassandra Project. Welcome to Apache Avro! Ambari.apache.