• Integrates
• Simple API
• Scalable
• Fault tolerant
• Guarantees data processing
• Use with any language
• Easy to deploy and operate
• Free and open source

Apache Storm is a free and open source project licensed under the Apache License, Version 2.0

Apache Storm ships with a set of integrations for common systems:

1. Spouts: Integrations with queueing systems such as JMS and Kafka.
2. Database integrations: Helper bolts for integrating with JDBC-compatible databases, HDFS, and Redis.
3. Flux: A framework for defining Storm topologies declaratively with YAML.

See the Apache Storm documentation for a full list of available modules.