[This is self-promotion post]
Hi everyone! Me and my friends have just released open-source (Apache 2.0) IoT project that is free for commercial use.
It lets You collect, visualize and analyze data from devices using MQTT, CoAP and HTTP protocols.
You can find it here: https://github.com/thingsboard/thingsboard
Don't hesitate to star the project on github to help us spread the word.