CAD fx, Inc. AutoCAD applications with a focus on mechanical solutions for the machine tool industry. http://www.cadfx.com/

Peekay-CAD Electrical, instrumentation, process and piping packages for AutoCAD. http://www.users.bigpond.com/peekaydesign/

Steel Stubs A commercial add-on for AutoCAD 2000 which helps in the development of 3D structural and mechanical models. http://steelstubs.bizland.com/

Auto-Z AutoCAD add-on that helps create feature-based 3D models by taking an existing 2D multi-view drawing and building an AutoCAD solid model. By EMT Software. http://www.auto-z.com/

ACADstore Offers third party add-ons to AutoCAD for architects, engineers, surveyors, designers and drafting professionals. http://www.acadstore.com/

AccuRender Create photorealistic, still, panorama, and animation image files from 3D models inside AutoCAD using raytracing and radiosity technologies. http://www.accurender.com/

AutoSolids Offers 3D solid modeling and mechanical design software that works with AutoCAD. http://www.autosolids.com/

Devpipe An AutoCAD application for generating the intersection profiles between pipe elements of various shapes. http://www.devpipe.com.br/

Meliar Design AutoCAD add-ons for creating cross sections on meshes and polylines and for mesh relaxation and panelling. http://www.parachip.demon.co.uk/

RCAD Software Applications and AutoCAD or IntelliCAD extensions for geometric analysis of solids and surfaces, as well as for CAM preprocessing and simulation. http://RCAD.GO.RO/

Articulate Solutions Partnership AutoCAD add-on for stage design, including truss and lights placement, weight loads checking, and equipment list creation. http://www.fatcad.com/

Tovna Digital Engineering Ltd. Developers and resellers of applications and hebrew language support for AutoCAD. http://www.tovna.com/

CZISO Isometric process piping application for AutoCAD, with automatic bill of materials. http://www.cziso.com/

Aceri, S.A. Offers Electrical Designer, an electrical design solution for AutoCAD. http://aceri.com/

TRACE Software A developer of AutoCAD applications for electrical tracing and plant design, as well as a parts database. http://www.trace-software.com/

ASVIC Engineering Software Add-ons for AutoCAD and IntelliCAD for mechanical, piping, HVAC, and structural steel design [site may crash Netscape browsers] http://www.asvic.com.au/

TurboTube An AutoCAD application for the design of piping structures and components. http://www.turbotube.de/index_e.html

AMC Inc. Provides programs for AutoCAD layer translation, and plotting GPS points in AutoCAD. http://www.aztechsoft.com/

Skillnet Multi-Batch application for AutoCAD, and SteelSect software for AutoCAD and IntelliCAD. http://www.skillnet.com.au/

Satish Lele A collection of AutoCAD add-on programs for piping in 2D and 3D, and other AutoLISP routines. http://business.vsnl.com/nelcon/