VizUp is an ad hoc polygon optimization system that enables you to reduce the number of polygons in a complex 3D model while retaining the quality and appearance of the original. Supports Wavefront .OBJ, VRML2 and StereoLitho (STL) file formats.

SolidStructural - 3D Steel AuDetailing System running inside AutoCAD

Sheet Lightning is a specialised engineering 2D/3D CAD System for creating and unfolding sheet metal designs for fabrication or manufacture. It handles cylinders, cones, square-to-round adapters, ovals, intersections and mutli-intersections.

RapidSketch is the fastest and easiest to learn software for creating accurate floor plan layouts. Built for appraisers, insurance inspectors, flooring installers and anyone who needs to calculate the area and perimeter of a floor plan.

True BoxShot is the ultimate solution to present your software box cover electronically! It is an easy tool to create quality 3D Boxshot, DVD Case, CD, Screenshot or Member Card in Adobe Photoshop.

dwgPlotX is a tool to batch plot and script-process AutoCAD drawings. It features an intuitive interface, various batch scripting assist tools, a scheduler and a file re-namer utility. (Compatible with both AutoCAD full and LT).

FREE AutoCAD Drawing Viewer is a lightweight powerful utility for viewing, editing, printing, converting and saving AutoCAD drawing files. Features include: Print drawings, create PDF files from drawing files in batches, etc.

To convert standard CAD DXF files into AI files in Illustrator, and also to convert AI files into DXF files for exporting.

Floor Plan Maker is perfect not only for professional-looking floor plan, office layout, home plan, seating plan, but also garden design, fire and emergency plan, HVAC, elevation diagram... and that is just the beginning!

Design Master Electrical is an integrated electrical building design and drafting program for AutoCAD. Features include panel schedule, circuiting, feeder sizing, fault current calculations, voltage drop calculations, and photometrics.