Hpat  
   A library containing many hatch patterns for AutoCAD, including stone, wood, roof patterns.
   http://www.arbeit.ro/hpat/

KCL Cadalog  
   AutoCAD symbol libraries for the food service, restaurant and commercial kitchen industries, for ordering on CD-ROM.
   http://www.kclcad.com/

CadToolsOnline.com  
   Block libraries of pipe fittings and 2D steel shapes for online ordering on CR-ROM.
   http://www.cadtoolsonline.com/

Hatch Patterns  
   A variety of hatch patterns for AutoCAD, available to download. Includes wood and stone tilings.
   http://www.hatchpatterns.com/

EZ-Plant  
   A software landscape library for AutoCAD for landscape architects and designers.
   http://www.ez-plant.com/

Autocad Detail Library  
   Architectural, interior and engineering symbols, details and blocks on CD-ROM to order, which can be modified for you own use.
   http://www.autocadlibrary.com/productinfoautocad.htm

FireHouse Designs  
   AutoCAD Blocks of US and European vehicles, trees, aircraft, and other objects, in plan and elevation.
   http://home.att.net/~george-nichols/

PIRS On-Line  
   Selection of downloadable AutoCAD drawing blocks, fonts, hatch pattern, and AutoLISP routines, for download based on the shareware concept.
   http://www.insa.com/files.shtml

Abscissa 3D Models  
   3D people, furniture, and vehicles in AutoCAD R14 file format.
   http://www.abscissa.net/

AutoCAD Iobjects  
   Downloads for AutoCAD and 3DS, including objects, models, drawings, and add-on routines [requires Flash and Javascript].
   http://www.iobjects.co.uk/

Compugraphx  
   A library of hatch patterns for AutoCAD, with interactive selection and other utilities.
   http://www.compugraphx.com/

E-Interiors.net  
   Free download of AutoCAD and 3D-Studio models for interior designers, architects, and students.
   http://www.e-interiors.net/

AHatch Pro  
   A standalone tool for the design of AutoCAD hatch patterns.
   http://www.fell-kernbach.de/products/ahatch/index-en.html

The CAD Block Exchange Network  
   A collection of AutoCAD DWG blocks, including people, trees, cars, trucks, boats, construction details, and hatch textures, as uploaded by contributors.
   http://cben.net/

Code Zebra, Inc.  
   Technical symbols in many categories for AutoCAD and Adobe Illustrator, as well as diagramming and title block management tools.
   http://www.codezebra.com/

ISOBlocks  
   A library of isometric drawings for use with AutoCAD and other CAD drafting software. Subject areas include piping, power transmission, electric motors, plumbing, tubing, and HVAC.
   http://www.isoblocks.com/

Ceco.net  
   Sells a CD with a selection of Autocad blocks, drawings and symbols, drawn up by architects, engineers and designers.
   http://www.ceco.net/