BricsNet  
   AEC software development company primarily involved with Microstation and Intellicad AEC add-ons and related building industry software
   http://www.bricsnet.com

Artifice, Inc.  
   Develops and markets DesignWorkshop, an architectural 3D modelling software for Windows and Macintosh.
   http://www.artifice.com/

ArCon  
   A 3D CAD software for use in civil engineering, architecture, and interior design.
   http://www.arcon-software.com/

A E C Technologies  
   Applications software expertise with cad and multimedia products for key industries.
   http://www.aectech.com/

ARCAD  
   Architectural CAD system for the Linux operating system.
   http://www.arcad.de/

BOA  
   Architectural 3D design software for Apple Macintosh systems.
   http://www.boa-research.com/

SCADDS  
   Offers CAD software for the architectural, civil and Structural Engineering domains, as well as related services.
   http://www.scadds.com/

drcauto  
   Developers of the Smart Architect range of architectural extensions to AutoCAD and AutoCAD LT, as well as a 3D modeller, and a LISP enabler for AutoCAD LT.
   http://www.drcauto.com/

Cad Details  
   Library of construction details and product profiles for architecture, engineering, and landscaping. Registration required to gain access.
   http://www.caddetails.com/

WSCAD Electronic GmbH  
   CAD systems for electrical designers, project planners, engineering offices and service providers, as well as for industrial and manufacturing control engineers.
   http://www.wscad.com/

Eagle Point Software Corporation  
   CAD software for building design and estimating, civil design, hydraulics, landscaping, structural engineering, and surveying.
   http://www.eaglepoint.com/

Argos Systems, Inc.  
   Software for construction and design management, with CAD tools for wood and steel frameworks and premanufactured housing.
   http://www.argos.com/

FIT, Inc.  
   The creators of Cadvance, a Windows CAD program for architects, engineers and designers.
   http://cadvance.com/

Interstudio Srl.  
   Software for architectural 3D CAD, land modelling, surveying, photogrammetry, and geotechnical evaluations, for Macintosh,
   http://www.interstudio.net/

Home Plan Pro  
   Software that makes it easy and fun to draw a bird house or your dream home.
   http://www.homeplanpro.com/

MultiCad  
   A drafting program for architects with 3D and 2D versions, for Windows.
   http://www.multiquant.com/

Amethyst ShadowFX  
   A sun and shadow modelling program for architects and town planners, working with data from DWG/DXF files.
   http://www.shadowfx.co.uk/

Informatix Software International  
   Developers of the Piranesi and MicroGDS software products for the architectural, engineering and construction industry.
   http://www.microgds.com/

CAD Quest, Inc.  
   A series of simple tools for the design and estimation of decks, fences, pavings, and wood frame structures.
   http://www.cad-quest.com/

PocketCAD  
   A mobile CAD software for AEC professionals to create and edit drawings on Windows based handheld PCs.
   http://www.pocketcad.com/

CAD Consulting USA  
   Distributor for the ALLPLAN FT architectural CAD software in North America, with information about the product and related services.
   http://www.cadconsulting-usa.com/

Form.Z  
   Software for complex 3D modelling and visualisation. Designed and conceived by an architect
   http://formz.com

SketchUp 3D  
   @Last Software designed this sketch-based 3D design program that is easy to use.
   http://www.sketchup.com

Common Point Technologies  
   Provides 4D visual planning solutions to the architecture, engineering and construction industry.
   http://www.commonpointinc.com/

Building Composer  
   A free, open source, suite of criteria-based building design tools to support architectural programming and conceptual design.
   http://bc.cecer.army.mil/

Expos Software  
   Expos is a specialized software for exhibition stands designing. It is a completely standalone system using mainly Octanorm items. 3D visualization is also built in.
   http://expos2.3web.cz/

MillLister, Inc.  
   SmartLister AutoCAD extension to retrieve cut lists and bill of materials from 3D solid model assemblies, for home building and furniture work.
   http://www.SmartLister.com/

Quest Solutions, Inc.  
   Earth measuring, estimating, and bidding software for construction contractors.
   http://www.questsolutions.com/

Soft Tech Engineers  
   Civil Engineering Applications for the use of consulting engineers, structural designers, and architects.
   http://www.softtech-engr.com/

ideCAD Software GmBH  
   AEC CAD software including ideCAD Architecture, ideCAD Structural, ideCAD Render and libraries.
   http://www.idecad.com/

TAD: The Architect's Desktop  
   TAD Designer is a holistic design software. It is a solid 3D modelor based on an abstract representation system for all architecture elements
   http://www.tad.tangentially.com

PowerCAD  
   CAD program in 2D/3D for architectural and mechanical applications, with AutoCAD compatibility features.
   http://www.powercad.com/

Revit Users Resource Center  
   Download families, share knowledge, learn more and ask questions about Revit.
   http://www.revitcity.com

DesigNERD For Professional Designers Architects  
   To give professional designers/architects/design-build people such as yourself an important technical advantage when dealing with clients
   http://www.designerd.com

Autodesk Revit  
   Revit is a parametric building modeler for architects, with intelligent building components, views, and annotations.
   http://usa.autodesk.com/adsk/servlet/index?siteID=123112&id=3781831