More than 400 customers, including 25 companies in the Fortune 100 rely on DataStax's massively scalable, flexible, fast and continuously available big data platform built on Apache Cassandra™.
Hortonworks is the only 100-percent open source software provider to develop, distribute and support an Apache Hadoop platform explicitly architected, built and tested for enterprise-grade deployments. Developed by the original architects, builders and operators of Hadoop, Hortonworks stewards the core and delivers the critical services required by the enterprise to reliably and effectively run Hadoop at scale. Our distribution, Hortonworks Data Platform, provides an open and stable foundation for enterprises and a growing ecosystem to build and deploy big data solutions. Hortonworks also provides unmatched technical support, training and certification programs.
OrientDB Ltd is a private company that officially leads the development of the OrientDB Open Source Project. The original author and the main committers of the project created the company in 2011 to provide Enterprise Support for such technology.