Hazelcast - Clustering and highly scalable data distribution platform for Java
Amazon Kinesis - Amazon Kinesis services make it easy to work with real-time streaming data in the AWS cloud.
Apache Storm - Apache Storm is a free and open source distributed realtime computation system.
PieSync - Seamless two-way sync between your CRM, marketing apps and Google in no time
Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.
Apache Flink - Flink is a streaming dataflow engine that provides data distribution, communication, and fault tolerance for distributed computations.