RabbitMQ
ZeroMQ
Kudu
Storm
Samza
SQS
Redis
Aeron
MAPR Streams
Kafka for Beginners
Confluent
One must make note that Storm and Samza can in fact be used along side Kafka in a data pipeline. It is the context of how one plans to use a platform, invariably dictated by the given constraints of the problem at hand, which may be in form of either batch or real-time streams for that matter.
