 GlobalCAD - http://www.globalcad.com/products/index.html Offers general drafting tools as well as LandARCH, a landscaping application for AutoCAD. |
 Cad Easy Corporation - http://www.cadeasy.com/ AutoCAD extensions EasySite for terrain modelling and visualization, and EasySurf for mapping and road development, as well as related symbol libraries. |
 MultiSuite Software - http://www.multisuite.com/ 2D and 3D steel and concrete detailing for AutoCAD. Also available as platform-independent incorporating AutoCAD OEM technology. |
 Trace Software - http://www.traceindustry.com/ The Trace Elec Pro electrical schematic solution for AutoCAD, and the Trace Plant Designer package for industrial installation and piping design. |
 CadPoint, Inc. - http://www.cadpointinc.com/ Provides Structural CAD, a structural engineering design software for steel, wood, and concrete compatible with Audodesk AutoCAD. |
 FireAcad Design Software - http://www.fireacad.com/ AutoCAD extension for fire sprinkler designers. The program aids in design, hydraulic calculations and material listing. |
 Roof Builder Tools - http://www.roofbuildertools.com/ A 3D roof modelling shareware for AutoCAD. |
 Survey, Cogo and Drafting - http://www.cogosoftware.com/ Surveying, coordinate geometry, digital terrain modelling, and drafting applications for Intellicad and AutoCAD, as well as free autolisp routines. |
 Design Master Software, Inc. - http://www.designmaster.biz/ HVAC and electrical building design and drafting software for AutoCAD. |
 Michael Tint - http://www.geocities.com/tintmichael/MT_PROG/MT_SECTION.htm MT Section for creating sectional profiles, MT Calculator for calculating volumes, areas, and distances in civil engineering. |
 AC Plant Designer - http://www.acplant.com/ A plant design and construction toolkit connecting AutoCAD with database functionality. |
 Advanced Graphics Technology, Inc. - http://www.agtcad.com/ Software for Cogo, legal descriptions, TIN models, contours, and sections, based on AutoCAD and LandDesktop. |
 SYCODE - http://www.sycode.com/ Offers terrain modelling software for AutoCAD and as a standalone product, as well as general meshing software. |
 LTplant - http://www.ltplant.com/ Electrical, instrumentation, and plant design software for AutoCAD LT, with isometric drafting and BOM functionality. |
 ArchSymb - http://www.archsymb.com/ Architectural symbols and routines for AutoCAD [requires Javascript for navigation]. |
 KLH Software, Inc. - http://www.klhsoftware.com/ Architectural drafting system for AutoCAD that provides an array of productivity tools designed to speed the commercial and residential drawing process. |
 drcauto - http://www.drcauto.com/ 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. |
 Inopso GmbH Interoperable Solutions - http://www.inopso.com/ Offers an IFC-Interface for Architectural Desktop, which allows to exchange architectural data according to IAI standards. |
 Computer Services Consultants Ltd. - http://www.3dplus.info/ Manufacturers of the 3D+ parametric 3D structural modeling and drawing application with integrated analysis and design. |
 ArchSoft - http://www.grovetec.com/ A 2D application program for AutoCAD and IntelliCAD for producing architectural working drawings. |
 AB Studio - http://aec.cadkon.cz/ CADCON is an extension to AutoCAD or Architectural Desktop for structural and building services design. |
 InAdire Teknik - http://www.inadire.se/ Free and commercial AutoCAD LT and MicroGDS add-ons for drawing reinforcement bars and insulation. |
 MillLister, Inc. - http://milllister.com/ SmartLister AutoCAD extension to retrieve cut lists and bill of materials from 3D solid model assemblies, for home building and furniture work. |
 Alexander Kosov - http://geol-dh.ru/en_index.html 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. |