The CityJSON specifications and the accompanying software are mostly developed and maintained by the following people 3D geoinformation group at TU Delft.

The following are the currently the main collaborators:

  1. Hugo Ledoux, TU Delft
  2. Claus Nagel, virtualcitySYSTEMS
  3. Ken Arroyo Ohori, TU Delft
  4. Kavisha, TU Delft
  5. Anna Labetski, TU Delft

For any questions/issues/errors, please open an issue on GitHub so that everyone can benefit from the question (and its answer).