1)   Estimator 2.0
Estimation, Rate Analysis and Project Management Software for Architects, Builders, Engineers and Construction Companies.

 2)   CAD Closure 1.8
CAD Closure allows you to generate geometric closures from the dimension text (not line properties) in your CAD drawing. Works seamlessly with AutoCAD but is not required as CAD Closure has a built-in viewer. Multiple reports formats available.

 3)   AHatch Pro 1.1
AHatch Pro is a flexible tool for the design of Autodesk AutoCAD hatch patterns. The generated hatch patterns can be used with the AutoCAD "hatch" and "bhatch" commands. AHatch Pro is developed as a stand-alone program.

 4)   BeamProps 2.4
This software is used to calculate section properties like area, moment of inertia, radius of gyration, etc for more than 25 sections and shapes. These equations are taken from "Roark's formulas for stress and strain (7th Edition)" book.