OpenWave is a VTH case system (permitting, supervision and enforcement) for municipalities, regional environment agencies, provinces and similar organisations. It is low-code: case types and processes are configured to the step-by-step flow you need. Integrations exist with, among others, BAG, BRP, the Chamber of Commerce register and the DSO API. REM Automatisering maintains the source code within a community of users and suppliers. The software is available as SaaS or private cloud with an SLA, or through the public source code.
REM Automatisering B.V. is based in Amsterdam; according to the company a foundation holds its shares, so there is no parent in another country. According to the vendor the source code is under the EUPL and also available as GPL or proprietary. It can be downloaded, but the website names no public repository and says a ready-to-install package is not yet available: contact the vendor. The trust page gives the data location only as unfilled template text (Netherlands or EU), so what applies is not confirmed. The website does not name the hosting provider or country: ask.