1. Apache Drill. Accessed: October 2015 (http://drill.apache.org).
2. Apache Hadoop. Accessed: October 2015 (http://hadoop.apache.org).
3. Apache Mahout. Accessed: October 2015 (http://mahout.apache.org).
4. Apache MLlib.Accessed: October 2015 (https://spark.apache.org/mllib/).
5. Apache Spark. Accessed: October 2015, (https://spark.apache.org).