This is was a plugin that worked as a 3D object editor within ArchiCAD 9 but was never updated for v.10 - or so we thought. In fact, the original link referred to in an older post - gdl toolbox - freeware doesn’t work any more. Just when I’ve started to learn GDL, one of [...]

If only all manufacturers were as concerned about having their products accurately and easily inserted into CAD drawings. Marvin sets the standard by giving architects not just basic 2D drawings (dwg and dxf) but 3D symbols for ArchiCAD, ADT, SoftPlan, Chief Architect, Home Designer and SketchUp!
Go to :: http://www.marvin.com/default.aspx?page=Resources_and_Technical_Inform ation

Koillismaan Lasi Ky is a professional showerware manufacturer from Finland. Their products include shower cabin, shower enclosure, shower screens; sliding, swing, and pivot shower doors.
16 GDL objects [49 kB]
Go to :: Koillismaan Lasi

More than 200 GDL objects from their furniture catalogue in their download section. Also available in AutoCAD and MicroStation formats
Go to :: Swedese

From a company that mostly makes office furniture is a library of their products in GDL format.
[6.2MB .rar / 8.2 MB .zip]
Go to :: http://cadsymbol.kinnarps.se/html/en/item_ARCHICAD.html