Confluent - Confluent offers a real-time data platform built around Apache Kafka.
Streamdata.io - Streamdata.io provides a proxy-as-a-service that turns any request-response REST APIs into an event-driven streaming API.
Spark Streaming - Spark Streaming makes it easy to build scalable and fault-tolerant streaming applications.
Google Cloud Dataflow - Google Cloud Dataflow is a fully-managed cloud service and programming model for batch and streaming big data processing.
Apache Spark - Apache Spark is an engine for big data processing, with built-in modules for streaming, SQL, machine learning and graph processing.
Amazon Kinesis - Amazon Kinesis services make it easy to work with real-time streaming data in the AWS cloud.