https://www.simes.it/en/download/
- Light Sources GDL Objects
a path through the web to GDL sources
https://www.simes.it/en/download/
http://www.puertasgismero.es/en/bim-english
http://materia.se/en/downloads/
http://materia.se/en/downloads/
https://martela.com/3d-objects-and-material-libraries
https://www.lammhults.se/downloads
https://www.kinnarps.co.uk/design-tools/product-downloads/
https://www.jotun.com/no/no/b2c/professional/downloads/