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. 

Axonize - Axonize IoT platform - the smarter way to truly realize your IoT potential and create smart, scalable IoT projects to increase profitability.

Countly - Product Analytics and Innovation. Build better customer journeys.

AWS IoT - Easily and securely connect devices to the cloud.