| CADClick | | A database for mechanical engineers that offers access to CAD geometries from different suppliers on mechanical engineering. |
| CADParts | | Produces library symbols and footprints for the Cadence CAD software. |
| CADRegister | | A source for design professionals, engineers, and architects to download component drawings from leading manufacturers, in a variety of industry-standard formats. |
| CADSymbols | | Online 2D/3D parts library for Solidworks, AutoCAD and other software, in formats including ACIS SAT, DXF, DWG, and IGES. |
| Catalog Data Solutions Inc. | | Online 2D/3D parts library hosting, integrated with PTC Wildfire and the ability to do Parametric searches. Formats include PRT, DXF, IGES, DWG. |
| Human-Ergo | | A source for poly-faceted 3D Models of human figures, cars, trucks and construction machinery for SolidWorks, Unigraphics, SolidEdge, and IronCad. |
| Oh Yeah CAD | | A free online parts library that supports AutoCAD, Solidworks, TurboCAD, and SolidEdge native file format. |
| PARTserver | | A parts library integrated with many CAD systems for direct invocation, as well as with standard data formats |
| PARTsolutions | | A parts library integrated with many CAD systems for direct invocation, as well as with standard data formats. |
| SolidLib | | A large repository of 3D solid Models. Specializing in MIL-STD hardware. |
| Trace Parts | | Library of parametric components for 2D/3D CAD assemblies, which can be used with several CAD packages. |
| Vanguard Software GmbH | | Offers partsCAT, an electronic spare parts catalogue software for publishing catalogues on CD-ROM and online. |
| VirtualCAD | | Free 3D CAD models in tandem with Free manufacturer part number interchanges. Supports all major CAD systems. |
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