Azure Stream Analytics - Azure Stream Analytics offers real-time stream processing in the cloud.
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.
AWS IoT Analytics - IoT Management
ThingSpeak - Open source data platform for the Internet of Things. ThingSpeak Features
Amazon Kinesis - Amazon Kinesis services make it easy to work with real-time streaming data in the AWS cloud.
Zatar - IoT Analytics