3D Stupid Software: 3D CAD software for creating 3D architectural window and transom blocks used in 3D architectural design, brick wall options.
AB Studio: CADCON is an extension to AutoCAD or Architectural Desktop for structural and building services design.
AC Plant Designer: A plant design and construction toolkit connecting AutoCAD with database functionality.
Advanced Graphics Technology, Inc.: Software for Cogo, legal descriptions, TIN models, contours, and sections, based on AutoCAD and LandDesktop.
Alexander Kosov: GEOL_DH for graphical representation of geological, surveyor, mining and calculation data in 3D space. KAI-2001 package for geologists and geophysicists, surveyors and miners, builders-designers.
ArchSoft: A 2D application program for AutoCAD and IntelliCAD for producing architectural working drawings.
ArchSymb: Architectural symbols and routines for AutoCAD [requires Javascript for navigation].
ATG CCM Plus 2000: Software for accessing and editing facility management data in AutoCAD with an integrated MS Access interface.
Cad Easy Corporation: AutoCAD extensions EasySite for terrain modelling and visualization, and EasySurf for mapping and road development, as well as related symbol libraries.
CadPoint, Inc.: Provides Structural CAD, a structural engineering design software for steel, wood, and concrete compatable with Audodesk AutoCAD.
Computer Services Consultants Ltd.: Manufacturers of the 3D+ parametric 3D structural modeling and drawing application with integrated analysis and design.
Design Master Software, Inc.: HVAC and electrical building design and drafting software for AutoCAD.
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.
FireAcad Design Software: AutoCAD extension for fire sprinkler designers. The program aids in design, hydraulic calculations and material listing.
GlobalCAD: Offers general drafting tools as well as LandARCH, a landscaping application for AutoCAD.
InAdire Teknik: Free and commercial AutoCAD LT and MicroGDS add-ons for drawing reinforcement bars and insulation.
Inopso GmbH Interoperable Solutions: Offers an IFC-Interface for Architectural Desktop, which allows to exchange architectural data according to IAI standards.
KLH Software, Inc.: Architectural drafting system for AutoCAD that provides an array of productivity tools designed to speed the commercial and residential drawing process.
Leica Geosystems TPS-CAD: An online data acquisition application for use with AutoCAD and the LEICA TPS300 Series Total Stations.
LTplant: Electrical, instrumentation, and plant design software for AutoCAD LT, with isometric drafting and BOM functionality.
MBA Computing: Timber Frame software for the housing and construction industries. Products consist of Construction Designer Modules, as well as training and consultancy.
Michael Tint: MT Section for creating sectional profiles, MT Calculator for calculating volumes, areas, and distances in civil engineering.
MillLister, Inc.: SmartLister AutoCAD extension to retrieve cut lists and bill of materials from 3D solid model assemblies, for home building and furniture work.
MultiSuite Software: 2D and 3D steel and concrete detailing for AutoCAD. Also available as platform-independent incorporating AutoCAD OEM technology.
PERI GmbH: Offers the PERICAD AutoCAD extension and ELPOS for formwork planning with PERI Formwork and Scaffolding.
Roof Builder Tools: A 3D roof modelling shareware for AutoCAD.
Stardsign CAD Solutions: Extensions to Architectural Desktop offering utility functions, dormer construction, and layer management.
Struc Plus: Suite of parametric driven modules that provide tools and macros related to the preparation of structural engineering drawings.
Survey, Cogo and Drafting: Surveying, coordinate geometry, digital terrain modelling, and drafting applications for Intellicad and AutoCAD, as well as free autolisp routines.
SYCODE: Offers terrain modelling software for AutoCAD and as a standalone product, as well as general meshing software.
Trace Software: The Trace Elec Pro electrical schematic solution for AutoCAD, and the Trace Plant Designer package for industrial installation and piping design.