The Open Notificaties project was built for the Open Zaak project, initiated shortly before the 1.0 release of the VNG standards for "API's voor Zaakgericht werken", on August 1, 2019, by 9 municipalities:
- Amsterdam
- Rotterdam
- Utrecht
- Tilburg
- Arnhem
- Haarlem
- 's-Hertogenbosch
- Delft
- Hoorn, Medemblik, Stede Broec, Drechteland, Enkhuizen (SED)
Using Dimpact as a legal entity, they formed a project to develop a modern, open-source data- and services-layer to enable zaakgericht werken, in line with the Common Ground model.