- GDLschmiede: Tools and strategies for GDL object development
GDL Paper and Web documentation sources
- Furnitur GDL Library
- Furniture Library
List of all Commands and Keywords
- Alphabetical List of all GDL commands and keywords
- Topical orderer List of all GDL commands and keywords
- A comprehensive guide to creating powerful ArchiCAD objects
- Please use search engine because no longer available on the official site
GDL Technical Standards
- Part of Graphisofts support documentation for GDL developers about technical GDL standards.
- Part of Graphisofts support documentation for GDL developers about GDL library design.
Specifiation of Libraries
- Part of Graphisofts support documentation for GDL developers about specifiation of GDL libraries.
- GDL Center – The GDL knowledge base
- Reference Guide
- Tips and Tricks
- GDL-Projects as Open Source Project
- Platform for development of free GDL objects.