Radan Systems Pte Ltd
To enhance the performance of CAD and Engineering Systems
http://www.radansys.com.sg/

Ransen's ObjectARX Course
Learn to program and customize AutoCAD using C++.
http://www.ransen.com/cadcourse.htm

raster to vector to raster conversion
Cad Cam have the ability to scan paper, aperture cards, film to AutoCAD, MicroStation, D-Tools, ArcInfo, Catia, and most other CAD systems - literally any CAD product you have, into a CAD Perfect™ CAD drawing.
http://www.cadcam.org

Rasterex
A world class supplier of technical image management software to OEM and business partners in 90 countries. Rasterex delivers award-winning raster editing software. Rasterex viewing technology powers technical Internet sites.
http://www.rasterex.com

RasterTech
specialized in the distribution of software for raster edit and drawing management.
http://www.rastertech.org

RasterVect Software
Specialize in the development and distribution of the professional graphic tools.
http://www.rastervect.com/

Rayfront
A collection of free utilities in Autolisp, ADS and ARX for 3D modelling and exporting to visualization systems.
http://www.schorsch.com

RCAD Software
Applications and AutoCAD extensions for geometric analysis of solids and surfaces, as well as for CAM preprocessing and simulation.
http://rcad.go.ro/

rcms Group
AEC production services for Autodesk, Microstation, Revit
http://www.yesrcms.com

Real Architect

http://www.realarchitect.com/

RealityWave Inc.
RealityWave's VizStream® Platform is the fast, easy way to visualize, access, and integrate industrial data into any enterprise application for true communication and collaboration.
http://www.realitywave.com

REALVIZ
REALVIZ provides the missing link between 2D live action footage and 3-D computer generated images to Broadcast/Cinema, Web, Digital Imaging or Architecture
http://www.realviz.com/

Realworld Imagery Textures
Add real looking people, building materials and surface textures, trees, shrubs, indoor plants, vehicles and more to your CAD/3D/2D designs. High quality imagery exclusively for the Architectural field. Download FREE samples and view online catalog at website.
http://www.realworldimagery.com

REIWORLD.COM
software solutions and related information technology (IT) services for the engineering industry.
http://www.reiusa.com/

Renderviz
an architectural visualization company managed by two professional registered architects.
http://www.renderviz.com

Repro Products Inc.
The team at Repro Products is your source for document creation, imagining solutions, AutoCAD® training and AutoDesk sales. Your needs as a customer are Repro Products’ first priority. Since 1978, Repro Products Inc has been providing service to architects, engineers, construction, design and consulting professionals in the Atlanta area and throughout the Southeast.
http://www.reproproducts.com

Revit City
Our aim is to give the Revit community a central place where they can get thier questions answered, share their latest ideas or creations, and quickly and easily find the information or families they are looking for.
http://www.revitcity.com

RH CAD

http://www.geocities.com/rhcad/index.html

Richmond AutoCAD Manifest
The Richmond AutoCAD Manifest is an AutoCAD User Group for Central Virginia. We hold monthly meetings to discuss a wide range of AutoCAD topics, review new software, and exchange ideas between members.
http://www.ramlug.org

Robert Green Consulting Group
The Robert Green Consulting Group’s mission is to help engineering, design and manufacturing firms better utilize their current software tools while planning for a new generation of Internet project and data management software.
http://www.greenconsulting.com

RobiNZ Blog
CAD and design
http://rcd.typepad.com

Rochester Area AutoCAD User Group

http://www.raaug.org/

RockWare Inc.

http://www.rockware.com/

rolitech.com - A Gallery of 3D Art
Downloadable 3D Max scenes and models all free ranging from seashore to interior designed rooms ... A Gallery of 3D art done with Autocad and 3D Max
http://www.rolitech.com/default2.htm

ROMCAD, Romanian CAD Conversion Company
ROMCAD offers GIS/CAD conversion services, 7 days in a week, quality guaranteed - 99% accuracy
http://www.romcad.ro

Ron Blank & Associates, Inc.
The leading provider of free AIA continuing education courses on-line. Also provides face-to-face architectural calls to over 2000 architectural firms across the country.
http://www.ronblank.com

Ron Leigh AutoLISP Programming
Using AutoCAD®? Want to try AutoLISP®? This site may help you!
http://courses.home.att.net/autolisp/

RoofBuilderTools
Provides software to model complex 3d roofs in AutoCAD 14 and 2000 and create flat 2d elevations
http://www.roofbuildertools.com

RRTC
RRTC is a leading provider of instructor-led training in AutoCAD.
http://www.rrtc.com/

Sacramento AutoCAD Users Group

http://www.sac-acad.org/

Sage CAD Applications, Inc.

http://www.sagecad.com/

San Antonio AutoCAD User Group

http://www.saaug.org/

San Francisco AutoCAD User Group

http://www.sfaug.org/

Sarasota AutoCAD User's Group

http://www.geocities.com/siliconvalley/bridge/7221/

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

Save Time and Money with AutoCAD
Jos van Doorn is an AutoCAD specialist, AutoLISP programmer, and writer of AutoLISP books
http://autocadbooks.topcities.com

Scan2CAD
The breakthrough in affordable raster to vector conversion software you’ve been waiting for!
http://www.rastertovector.com/

Schaefer Enterprises and Associates
SEA develops applications using the Microsoft Office products, AutoCAD and other VBA enabled applications.
http://www.schaeferea.com/

Schindler Elevator
Schindler's SENSE, new-generation maintenance, combines advanced networking technologies with state-of-the-art maintenance processes and products. Schindler Elevator Network for Service Excellence can give you simpler, faster and more reliable ways to manage and oversee your maintenance.
http://www.us.schindler.com/SEC/websecen.nsf/pages/home

Schreiber Instruments
Developers of the QuickSurf Digital Terrain Modeling system for AutoCAD.
http://www.schreiber.com/

Science& Engineering Encyclopedia
Free online science and engineering resource with descriptions, conversions, calculations, equations and material data.
http://www.diracdelta.co.uk

ScriptEeze
A tool that can increase your productivity on AutoCAD ten-fold.
http://xanadu-limited.com/scripteeze/

ScriptSheets
This free ScriptSheets Add-In for MS-Excel 2000 is a great way to automate any version of AutoCAD!
http://www.scriptsheets.com

sDotson.com - Inventor Tutorials, Parts & Discussion
Sean Dotson's Autodesk Inventor Tutorials and More
http://www.sdotson.com/

SEIFERT Group

http://www.seifert.com/

Sepialine

http://www.sepialine.com/

Series-Assist-Software

http://ourworld.compuserve.com/homepages/SaSTECT/

Shailesh Agrawal Associates-Valuers, Chartered Engineers
3D Cad Based Modelling, 3D Conversion Chartered Engineers, Industrial Structure Designers & Planners, Government Registered Building, Plant & Machinery Valuer, CAD Consultants, Engineering Software Consultant for Tailor made software, Mass Scale CAD Based Drawing Drafters & Plotters, A Leading Industrial Consultants in Vidharbh Region in Maharashtra State.
http://business.vsnl.com/charteredvaluer/MAIN.html

Simple CAD
To make your AutoCAD drafting simple and fast so that you can save time and money!
http://www.simplecad.com/

SketchUp
A unique design tool that combines the elegance and spontaneity of pencil sketching with the speed and flexibility of today's digital media.
http://www.sketchup.com

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

SmartDraw
Get CAD Results without the CAD hassles! Free Download!
http://www.smartdraw.com/specials/caddrawing.asp?id=11799

SmartPLOT
Capture 100% of your plot expenses and print revenues with the SmartPLOT suite of software!
http://www.smartplot.com/

Snap-Scan AutoCAD Books
New, popular and best AutoCAD Books
http://www.snap-scan.com/bk_autocad.html

SOFiSTiK
CAD and structural engineering software.
http://www.sofistik.com/

Softco Engineering Systems
AutoCAD STANDARDS MANAGEMENT
http://www.softcosys.com/

SoftDraft, LLC
SoftDraft, LLC develops low cost A/E/C software applications which work inside all versions of AutoCAD®. Because there is a short learning curve and no expensive training classes, our software makes the user productive immediately.
http://www.softdraft.com

Softelec's VPHybridCAD - No.1 in Color Drawing Vectorization and Design
Softelec's VPHybridCAD is with 15 000 sold licenses worldwide no. 1 in raster-to-vector conversion and color drawing edit + design. Free demo version available!
http://www.softelec.com

Softree

http://www.softree.com

SofTutor
The fastest way to learn CAD!
http://www.nvsi.com/

SolidWorks & COSMOSWorks Student Edition 2003-2004
(Non-English Site) The powerful, innovative, and easy-to-use solid modeling capabilities of SolidWorks make it the standard in 3D mechanical design software. Together with COSMOSWorks Professional, COSMOSMotion, and COSMOSFloWorks, the SolidWorks Student Edition provides a complete, industry-standard set of design tools for 3D modeling and design analysis.
http://www.solidworksacademic.de

SOMAXX
Specialised in AutoCAD software development: EXPORT MANAGER (export to more than 75 graphical formats) PROTECTION MANAGER (protect drawings with a password)
http://www.somaxx.com

Sonoma County AutoCAD User's Group

http://www.sonic.net/~budacad/scaugo1.htm

SophSys, Inc. (Sherpa products)
The SophSys Sherpa family of products provides efficient tools for distribution design and job-cost estimating in the office, or in the field. Operating standalone with our industry-standard materials and labor database, or integrated as the front-end to your materials management, GIS, or work management systems, SophSys offers database consulting and implementation services for utilities of all sizes.
http://www.sophsys.com

South Orange County Autocad Usergroup

http://communities.msn.com/SouthOrangeCountyAutocadUsergroup

Southwest Florida AutoCAD Professionals
SWFAUG provides opportunities for free AutoCAD training, demonstrations of new products and professional networking. for AutoCAD users.
http://www.swfap.org/

Spatial Corp.
Spatial is a market-leading provider of world-class 3D geometric modeling, interoperability, and visualization software components.
http://www.spatial.com/

Speed Menu 3.0
Speed Menu is a collection of AutoCAD blocks and Lisp routines designed to standardize and automate the process of producing residential house plans that adhere to today's complex building and drafting standards.
http://www.speedmenuusa.com

SPI
World's Premier Sheetmetal Design Software.
http://www.spi.de/

Spicer
Imagenation®, a document imaging application or "viewer", displays documents without requiring the software that created it.
http://www.spicer.com/

Star Training Institute
Providing a wide range of educational opportunities for individuals interested in training for the changing job markets.
http://www.startraining.com/

Stardesign CAD Solutions
Stardesign cad solutions provides low cost solutions with high yield results...all while keeping the Architects needs in mind
http://www.stardsign.com

Stavebnictví - Software

http://www.abf.cz/Software/Shareware/AutoCAD.html

STEEL 2000
Will quickly and accurately draw structural steel shapes found in AISC, CISC, European, British and Yamato tables.
http://www.accesswave.ca/~drking/

Steel Detailers Incorporated

http://www.angelfire.com/sd2/steeldetailers/index.html

Steel Stubs
Steel Stubs is a third party add-on for AutoCad2000 and MechanicalDesktop.
http://steelstubs.bizland.com/

STEFISKO.com - Software for AutoCAD
Useful collection of AutoCAD add-ons.
http://www.stefisko.com

Stef's Stop
LT Tips, Tricks, Tutorials, & More
http://home.earthlink.net/~yodersj/

StoneCAD
Interactive design tool created with the Architect / Designer in mind.
http://www.stonecad.com/Index/index.html

Straight Forward Software

http://www.maui.net/~ajp/

Streamspace
hvUnlight - ObjectARX application loader for AutoCAD LT 2000, 2000i, 2002 and 2004. Streamspace Solids - Solid modeller for AutoCAD and AutoCAD LT that provides grips editing capabilities.
http://www.stream-space.com/

Struc Plus

http://www.struc-plus.com/

Struc-Soft
Provides integrated engineering software solutions for industrial applications
http://www.strucsoft.ca/

Structural Systems Design
Provides quality structural engineering services.
http://www.ssd-inc.com/

Studio Tecnico: Arch. Giuseppe Conte & Ing. Carmine Conte
DWG and DXF Blocks
http://space.tin.it/edicola/lwcon/

Sum Concept Design

http://www.sum-cd.com/

SWPlot

http://www.swplot.com/

SYCAD

http://perso.wanadoo.fr/sycad/

Synergis Adept

http://www.synergis-adept.com/

Cad/Cam

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