Design Data  
   CAD software for structural steel detailing.
   http://www.sds2.com/

RAM International  
   Software for building analysis, design, and drafting in structural engineering.
   http://www.ramint.com/

Construsoft  
   Xsteel and PowerFrame software for steel stucture modelling and analysis, and PowerPlate FEM for analysis of plate and grid structures.
   http://www.construsoft.com

DSC CAD/CAM-Technologien GmbH  
   Offers the HyperSteel structural application for AutoCAD, and the SDDP steel design and detailing program for CADDS, as well as custom development.
   http://www.dsc.de/

GTS CADBuild  
   Supplies and supports structural engineering and geotechnical software such as STRAP, QUIKSOFT and GEO4.
   http://www.gtscad.com/

Steel-Projects France  
   Supplies an integrated system for the steel construction process for detailers and steel fabricators.
   http://www.steel-projects.fr/

In Re Ltd.  
   Real Steel CAD system for structural engineering aimed at 3D modeling, analysis and design, connection detailing, and automatic generation of drawings and reports.
   http://www.realsteel.lt/en/