1. Apache Hadoop. http://hadoop.apache.org/. Apache Hadoop. http://hadoop.apache.org/.
2. Apache Samza. http://samza.apache.org/. Apache Samza. http://samza.apache.org/.
3. Apache Spark Streaming. http://spark.apache.org/streaming/. Apache Spark Streaming. http://spark.apache.org/streaming/.
4. Apache Storm. https://storm.apache.org/. Apache Storm. https://storm.apache.org/.
5. Apache Zookeeper. http://zookeeper.apache.org/. Apache Zookeeper. http://zookeeper.apache.org/.