1. Apache Flink v. 1.7.
https://flink.apache.org/
. Accessed 31 March 2019
2. Apache FlinkCEP.
https://ci.apache.org/projects/flink/flink-docs-stable/dev/libs/cep.html
. Accessed 31 March 2019
3. Apache Flume.
https://flume.apache.org/
. Accessed 31 March 2019
4. Apache Kafka.
https://kafka.apache.org/
. Accessed 31 March 2019
5. Apache Spark Streaming.
https://spark.apache.org/docs/latest/streaming-programming-guide.html
. Accessed 31 March 2019