Apache Storm

Distributed event streaming platform capable of handling trillions of events a day. Used for building real-time streaming data pipelines and applications with high-throughput, fault-tolerance, and scalability.

Framework and distributed processing engine for stateful computations over unbounded and bounded data streams. Known for high performance in streaming data processing with exactly-once semantics.

Stream processing library porting ideas from Kafka Streams to Python. Used for building high-performance and reliable real-time stream processing applications with Pythonic API.