AutoCAD
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- cad4theatre
- Distance learning courses for AutoCAD users in the theater and entertainment industries.
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- CAD Architect
- Features a downloadable CAD library of files for architects and design professionals.
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- CAD Block Party
- AutoCAD Blocks of people from different global regions including Africa, United Arab Emirates, East Asia, India and the West.
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- CAD-O Designer Databases, Ltd.
- Producers of CD ROMs for construction manufacturers' products. Also offer architectural AutoCAD symbol libraries.
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- CADhatch.com Free AutoCAD Hatch Patterns
- A CAD hatch library, hundreds of FREE AutoCAD hatch patterns, including wood, stone, stonework patterns. & Free AutoCAD Hatch Generator tool
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- CadToolsOnline.com
- Block libraries of pipe fittings and 2D steel shapes for online ordering on CR-ROM.
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- Ceco.NET
- Online libraries of AutoCAD DWG blocks, symbols, and templates for free download, including free AutoCAD drawings of peoples, cars, trees, chairs and vehicles.
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- Code Zebra, Inc.
- Technical symbols in many categories for AutoCAD and Adobe Illustrator, as well as diagramming and title block management tools.
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- Details for a Dollar
- Library of residential construction CAD details. Each is downloadable for one dollar. Also option to purchase the entire library.
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- The CAD Block Exchange Network
- A collection of CAD DWG blocks, including people, trees, cars, trucks, boats, construction details, and hatch textures, as uploaded by contributors.
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- AutoCAD Developers Group Europe
- A non-profit association of software developers who are working on applications around AutoCAD.
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- Autodesk User Group International AUGI
- The user organization officially sanctioned by Autodesk for its products. Further information requires registration.
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- Advanced Graphics Technology, Inc.
- Software for Cogo, legal descriptions, TIN models, contours, and sections, based on AutoCAD and LandDesktop.
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- CadPoint, Inc.
- Provides Structural CAD, a structural engineering design software for steel, wood, and concrete compatible with Audodesk AutoCAD.
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- InAdire Teknik
- Free and commercial AutoCAD LT and MicroGDS add-ons for drawing reinforcement bars and insulation.
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- KLH Software, Inc.
- Architectural drafting system for AutoCAD that provides an array of productivity tools designed to speed the commercial and residential drawing process.