NC Import for SolidWorks
NC Import for SolidWorks is an add-in for SolidWorks. This add-in gives SolidWorks the ability to convert tool movements in NC commands to corresponding lines and arcs in a SolidWorks 3D sketch. CNC Machines worldwide use Numeric Control files (. nc or . ... NC Import for SolidWorks is very easy to use as it adds a new file type to the SolidWorks File Open dialog box. ... NC Import for SolidWorks lets you import NC files into SolidWorks so that you can view the intended toolpath in 3D and create curves and surfaces directly from the toolpath.
http://www.fpsols.com/installers/NCImportSW.exe - 293Kb - Download

Points Import for SolidWorks
Points Import for SolidWorks is a add-in for SolidWorks. This plug-in gives SolidWorks the ability to import points from text files. Points Import for SolidWorks is very easy to use as it adds a new file type to the SolidWorks File Open dialog box. To import a point file select Open from the... A new part document will be created containing the imported points. ... txt)" from the "Files of type" combo box and select a point file to import. ... Select "Point Files (*.
http://www.fpsols.com/installers/PointsImportSW.exe - 293Kb - Download

OBJ Export for SolidWorks
OBJ Export for SolidWorks is a plug-in for SolidWorks. This plug-in gives SolidWorks the ability to export graphical data to ASCII Alias|Wavefront OBJ files. Alias|Wavefront is the world's leading innovator of 2D/3D graphics technology for the film, video, games, interactive media, industrial... OBJ Export for SolidWorks is very easy to use as it adds a new file type to the SolidWorks File Save As dialog box. ... OBJ Export for SolidWorks tessellates the surfaces of a part and writes the triangular surfaces of the part to an OBJ file.
http://www.fpsols.com/installers/OBJExportSW.exe - 293Kb - Download

STL Import for SolidWorks
STL Import for SolidWorks is an add-in for SolidWorks. This add-in gives SolidWorks the ability to import graphical data from ASCII as well as binary Stereolithography (STL) files. The STL file format has become the Rapid Prototyping industry's standard data transmission format and is the format... STL Import for SolidWorks reads these triangular surfaces and knits them into a solid in a new SolidWorks part document. ... STL Import for SolidWorks is very easy to use as it adds a new file type to the SolidWorks File Open dialog box.
http://www.fpsols.com/installers/STLImportSW.exe - 293Kb - Download

HPGL Import for SolidWorks
HPGL Import for SolidWorks is an add-in for SolidWorks. This add-in gives SolidWorks the ability to import graphical data from Hewlett Packard Graphic Language Plot files. HPGL is the Hewlett Packard Graphics Language designed for specifying 2D graphical information for the HP range of plotters. ... HPGL Import for SolidWorks supports plot files created by drivers for the following plotters:  Hewlett-Packard 7475A Hewlett-Packard 7550A Hewlett-Packard 7580B Hewlett-Packard 7585B Hewlett-Packard 7586B Hewlett-Packard Draftmaster 1 (7595A) Hewlett-Packard Draftmaster 2 (7596A)...
http://www.fpsols.com/installers/HPGLImportSW.exe - 293Kb - Download

OBJ Import for SolidWorks
OBJ Import for SolidWorks is a plug-in for SolidWorks. This plug-in gives SolidWorks the ability to import graphical data from ASCII Alias|Wavefront OBJ files. Alias|Wavefront is the world's leading innovator of 2D/3D graphics technology for the film, video, games, interactive media, industrial... OBJ Import for SolidWorks reads these surfaces and knits them into a solid in a new SolidWorks part document. ... OBJ Import for SolidWorks is very easy to use as it adds a new file type to the SolidWorks File Open dialog box.
http://www.fpsols.com/installers/OBJImportSW.exe - 293Kb - Download

MITCalc3D for SolidWorks
MITCalc is a multi-language set of mechanical, industrial and technical calculations for the day-to-day routines. It will reliably, precisely, and most of all quickly guide customer through the design of components, the solution of a technical problem, or a calculation of an engineering point... The sophisticated interaction with many 2D (AutoCAD, AutoCAD LT, IntelliCAD, Ashlar Graphite, TurboCAD) and 3D (SolidWorks) CAD systems allows the relevant drawing to be developed or 3D models to be inserted in a few seconds.
http://www.mitcalc.com/download/MITCalcSW.exe - 16Mb - Download - Screenshot

ModelPress Desktop
Use ModelPress Desktop to view, measure and publish Multi-format 3D CAD formts to open Solidworks, Solid Edge, Inventor, IGES, STL, VRML and more. View, measure, explode, cross section, locate parts by name, etc. Publish all or part to 3DF & DWF.
ftp://ftp2.infograph.com/dl/ModelPressdesktop.exe - 16Mb - Download - Screenshot

Modelpress
The free ModelPress System provides a mechanism for publishing 3D files to a web-ready format, as well as a flexible, visualization application that can be embedded in other desktop applications or in web pages for web-delivery and viewing. ModelPress Publisher reads native 3D CAD model files... Designed to work with Microsoft Internet Explorer 5. ... 0 or higher. ... It can be a standalone desktop application or be embedded in another desktop application; or, it can be embedded in custom web pages to be a web-delivered control.
http://www.modelpress.com/freedownload/ModelPressSystem.exe - 16Mb - Download - Screenshot

MITCalc - Shafts Calculation
The calculation is designed for geometrical design and complex strength check of shafts. Application is developed in MS Excel, is multi-language, supports Imperial and Metric units and solves the following main tasks: - Simple definition of installed shafts, including hollow ones. ... - Support of 2D CAD (AutoCAD, AutoCAD LT, IntelliCAD, Ashlar Graphite, TurboCAD) and 3D CAD in full calculation package (Autodesk Inventor, SolidWorks). ... The calculation is based on data, procedures, algorithms and data from specialized literature and standards AGMA, ISO, DIN and BS.
http://www.mitcalc.com/download/MITCalcShafts01.exe - 1Mb - Download - Screenshot