Sheet metal for AutoCAD. It calculates flat (unfolded) sheet development of ducts, rectangle to round transitions, cylinders, cones, intersections, connections, bifurcations, elbows, etc. For HVAC, hoppers, cyclones, ducts, silos, piping, etc.
Price: $78, Rating: 10, Downloads: 117
Download
HighRoad is an interactive graphical application for the geometric design of roads and highways. Its intelligent object design and highly intuitive interface allows for fast and flexible design
Price: $150, Rating: 6, Downloads: 95
Download
DataFit is a tool for performing curve fitting, statistical analysis & data plotting. Fit equations with up to 100 parameters to data with up to 20 independent variables. Define your own equations or choose from over 600 pre-defined equations.
Price: $249.00, Rating: 8.5, Downloads: 68
Download 
Download Quick Conversion-LITE 10.3.0