Kaa - Kaa Enterprise IoT Platform is an end-to-end platform for enterprise-grade IoT, Kaa brings you up to speed with a broad stack of modern IoT technologies and, at the same time, gives you flexibility to adapt it all to your specific business domain.
ThingSpeak - Open source data platform for the Internet of Things. ThingSpeak Features
Mainflux - Mainflux is a secure, scalable, open-source IoT platform written in Go and deployed in Docker.
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
AWS IoT - Easily and securely connect devices to the cloud.