Cloudera is the leader in Apache Hadoop-based software and services and offers a powerful new data platform that enables enterprises and organizations to look at all their data.
Hortonworks Data Platform completes the core requirements of your enterprise with a 100% open source, fully-tested and certified, Apache Hadoop data platform.
Microsoft HD Insights
Microsoft’s HDInsights is a Hadoop-based service from Microsoft that brings a 100 percent Apache Hadoop solution to the cloud.
MapR delivers an enterprise-grade platform that supports a broad set of mission-critical and real-time production uses.