Greenplum HD is described as 'open-source certified and supported version of the Apache Hadoop stack. It includes Hadoop Distributed File System (HDFS), MapReduce, Hive, Pig, HBase, and ZooKeeper'. There are more than 10 alternatives to Greenplum HD for Online / Web-based, Linux, Windows and Mac. The best alternative is Google Cloud Dataproc. It's not free, so if you're looking for a free alternative, you could try Cloudera CDH or HortonWorks Data Platform. Other great apps like Greenplum HD are Platfora (Paid), Sybase IQ (Paid), Amazon Elastic MapReduce (Paid) and MapR (Freemium).
Platfora puts the power of Big Data Analytics into the hands of business users, providing self-service analytics capability across all of your customer interaction, machine and transactional data sets.
MapR makes Apache Hadoop more affordable and easier to use for big data analytics, business intelligence, distributed computing, machine learning, distributed file systems and map reduce grid computing.
Datameer is a business-user-focused business intelligence (BI) platform for Hadoop. But Datameer doesn't treat Hadoop as an island of information; it can connect to any data source through JDBC, Hive, HTTP, or other standards.
IBM InfoSphere BigInsights brings the power of Hadoop to the enterprise. Apache Hadoop is the open source software framework, used to reliably managing large volumes of structured and unstructured data.