ThingsBoard is an IoT platform for device management, data collection, processing and visualisation. Devices connect over protocols such as MQTT, CoAP and Modbus. The platform provides a rule engine, alarm rules, dashboards, multi-tenancy and role-based access control. It is available as a self-hosted on-premises edition, including for air-gapped environments, and as the managed service ThingsBoard Cloud.
According to its own privacy policy, ThingsBoard, Inc. is a US corporation. ThingsBoard Cloud has a North American and a European region, and the vendor's site says data in the European region is stored in the European Union. Account and licence data, however, are processed in the United States according to the privacy policy. The source code is on GitHub. From version 4.4 it is licensed under the Business Source License 1.1 (source-available, converting to Apache 2.0 after four years); earlier versions are Apache 2.0. Production use is free within the licence's additional use grant; beyond it a commercial licence is needed. Self-hosting keeps data in your own infrastructure.