When I visit the site, it is empty for me.
Do you guys get something there?
Do we know who is behind it?
Looks like GDL Visual Scripting, very nice graphics.
Also for me the page is empty now, probably it was posted too early ...if you search you could get a cached version of the page...but nothing more than a simple description:
"With PARAM-O you can create parametric ARCHICAD library objects without writing a single line of GDL code. PARAM-O utilizes node-based editing, but the result is a fully ARCHICAD compatible parametric library object.
Fully node-based parametric content creation.
Live preview of the final object during creation.
Save the result as parametric ARCHICAD library object.
Several basic shapes to use (like Block, Sphere, Cylinder, etc.).
Define pen and surface attributes for every created shape.
Mathematical and trigonometrical operations.
Shape boolean operations.
about the developers there is no trace, anyway as daviiiiidave says there was a downloadable alpha version of the plug-in, specifically designed for Archicad 24 beta 4, so, or the developer are in good terms with Graphisoft, or is developed directly by Graphisoft(conspiracy theory mode ON...... )