Home Assistant
www.home-assistant.ioHome Assistant communicates with your devices locally, and will fallback to pulling in data from the cloud if there is no other option. No data is stored in the cloud, and everything is processed locally. Companion Mobile Apps
Apache Kafka - Home Assistant
https://www.home-assistant.io/integrations/apache_kafkaApache Kafka is a real-time data pipeline that can read and write streams of data. It stores its data safely in a distributed, replicated, fault-tolerant cluster. To use the apache_kafka integration in your installation, add the following to your configuration.yaml file: apache_kafka: ip_address: localhost port: 9092 topic: home_assistant_1. YAML.
Home Assistant
https://www.home-assistant.ioHome Assistant keeps your data local, no need for a cloud. Home Assistant communicates with your devices locally, and will fallback to pulling in data from the cloud if there is no other option. No data is stored in the cloud, and everything is processed locally.