1. Apache hadoop http://hadoop.apache.org/. Apache hadoop http://hadoop.apache.org/.
2. Asterdata http://www.asterdata.com/sqlh/. Asterdata http://www.asterdata.com/sqlh/.
3. Drill http://incubator.apache.org/drill/. Drill http://incubator.apache.org/drill/.
4. Greenplum database http://www.gopivotal.com. Greenplum database http://www.gopivotal.com.
5. Impala https://github.com/cloudera/impala. Impala https://github.com/cloudera/impala.