Losant - Losant makes building connected experiences and solutions easy.
ThingSpeak - Open source data platform for the Internet of Things. ThingSpeak Features
Cisco Jasper - Jasper provides a SaaS IoT platform to enable companies of all sizes to launch, manage and monetize IoT services on a global scale.
ioBroker - flexible and modular application for the IoT and Smarthome
C3 IoT - C3 IoT enables energy companies to realize the full benefit of their IoT and system investments.
Ubidots - A cloud service to capture and make sense of sensor data