ThingSpeak - Open source data platform for the Internet of Things. ThingSpeak Features
Google Cloud IoT Core - A fully managed service to easily and securely connect, manage, and ingest data from globally dispersed devices
IBM Watson IoT Platform - Watson IoT Platform provides the ability to completely manage IoT landscape and make better, even real-time, business decisions.
Microsoft Power BI - BI visualization and reporting for desktop, web or mobile
AWS IoT Analytics - IoT Management
Blynk IoT platform - Join the most popular IoT platform to connect your devices to the cloud, design apps to control them, and manage your deployed products at scale