DeliCAD
- Offers add-ons and utilities for AutoCAD and vertical products, as well as custom development of applications for AutoCAD and IntelliCAD.
- http://www.delicad.com/

SteelAce
- An AutoLISP tool for designing simple dies and moulds.
- http://www.hot.ee/steelace/Contents.htm

Litio 3D
- A sheet metal unfolding software to be used as AutoCAD extension.
- http://www.litio3d.com.ar/

DataM Software GmbH
- COPRA MetalBender Software for AutoCAD, Mechanical Desktop or Inventor for parametric and non paremetric sheet metal design and unfolding.
- http://www.datam.de/

Autodesk Partner Products
- A service site by Autodesk where you can search for registered developers and their products.
- http://partnerproducts.autodesk.com/catalog/default.asp

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

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

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

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

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

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/

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/

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

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

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

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

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