15 sites in Directories
CADalog
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A directory of CAD resource files, an online parts library, and listings of CAD employment opportunities, with a searchable database.
http://www.cadalog.com/
cadbot
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A specialized search engine, which lists DWG and DWF files in idrop format, as well as more common search results
http://cadbot.com/
See also
The category Directoriesin other languages