Hello Ashley
You can find this link and a lot of other in this two topics :
http://archicad-talk.graphisoft.com/viewtopic.php?t=2434
http://archicad-talk.graphisoft.com/viewtopic.php?t=4067
This two topics are not exhaustives… Every week, I found new ones, sometimes in very specials langages —with or without cyrillc characters…—, some in authors sites, some in manufacturers sites, some in CAD portals sites.
The ArchiCAD comunity is very various, activ and prolific.
Some sites are more or less interesting but sometimes one finds the pearl with fine melt of a site Russian, Italian, Polish, Finnish, Czech, French, German or Brazilian…
Just needing, sometimes, a little translation of their parameters to become totaly usable
Enjoy it