Hortonworks, Inc. was a data software company based in Santa Clara, California that developed and supported open-source software (primarily around Apache Hadoop) designed to manage big data and associated processing.

Hortonworks software was used to build enterprise data services and applications such as IoT (connected cars, for example), single view of X (such as customer, risk, patient), and advanced analytics and machine learning (such as next best action and realtime cybersecurity).

[3] Hortonworks was formed in June 2011 as an independent company, funded by $23 million venture capital from Yahoo!

[4] The company employed contributors to the open source software project Apache Hadoop.

[4][8] In October 2018, Hortonworks and Cloudera announced they would be merging in an all-stock merger of equals.