Thingsboard open-source IoT Platform (thingsboard.io)

Hi everyone! Me and my friends have just released open-source (Apache 2.0) IoT platform that is free for commercial use. Sample projects: http://thingsboard.io/docs/samples Server side is based on Akka, gRPC, Zookeeper and Cassandra Front-end is based on Angular Material Don't hesitate to star the project on github to help us spread the word.