Top 4 iothub open source projects

azure-iothub-pubsub-esp8266
Using Arduino PubSub library with Azure IoT Hub on an ESP8266
IotHub
Cloud based IoT system solution. MQTT Broker, MQTT Agent, SignalR Hub, Data Source API
azure-iot-explorer
Cross-platform UI for interacting with devices attached to Azure IoT Hub
1-4 of 4 iothub projects