Apache Druid and the Druid documentation are licensed under the Apache License, Version 2.0.

The Druid website is licensed under CC-BY-SA 4.0

Contributions to Druid are subject to a contributor license agreement

Does Druid use or embed any other open source software?

Druid uses

  • Hadoop
  • Kafka
  • MySQL
  • ZooKeeper

Druid embeds

  • Curator
  • Jackson
  • Jetty
  • Joda Time
  • Ning Compress

See the NOTICE file for other software included as part of Druid.