| 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. |
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