ThingsDB is an open-source data platform from Cesbit B.V. that builds data storage and management into the programming language itself. The vendor describes it as a distributed interpreter for data-driven applications, with emphasis on high availability, scalability and event-driven programming. It is aimed at developers who want to build a backend without designing complex database schemas. Cesbit also offers support (weekday business hours, 24/7 on request), a two-day training, custom development and managed hosting of backends.
Cesbit is a Dutch software company; no parent company or majority owner is named. The source code of the database server sits in a GitHub repository that the vendor links to, under the GNU General Public License version 3. You can therefore run ThingsDB yourself and keep control of the data and its location. No location is stated for the managed hosting, so ask the vendor. The privacy policy names the GDPR as its framework and refers to agreements with external parties that process personal data.