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.
ThingSpeak - Open source data platform for the Internet of Things. ThingSpeak Features
Feather Icons - Simply beautiful open source icons
The IoT Guru - the IoT cloud backend company
Alexa Skill Kit - Effortless Alexa Skill development with AWS Lambda
IoTPlotter - IoTPlotter.com is a service which collects data from your IoT devices for long-term graph plotting and storage. It's completely free and made for the maker community.