Striim - Striim provides an end-to-end, real-time data integration and streaming analytics platform.
Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.
HVR - Your data. Where you need it. HVR is the leading independent real-time data replication solution that offers efficient data integration for cloud and more.
memcached - High-performance, distributed memory object caching system
Celonis - Celonis offers process mining tool for analyzing & visualizing business processes.
MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.