ThingSpeak - Open source data platform for the Internet of Things. ThingSpeak Features
Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.
Countly - Product Analytics and Innovation. Build better customer journeys.
memcached - High-performance, distributed memory object caching system
Azure IoT Hub - Manage billions of IoT devices with Azure IoT Hub, a cloud platform that lets you easily connect, monitor, provision, and configure IoT devices.
Apache Ignite - high-performance, integrated and distributed in-memory platform for computing and transacting on...