1)   AcadCalcStair 02
AcadCalcStair - Stair and Rail Auto drafting program + Calculator for AutoCAD. Main features: STAIRS & RAILS. Parametrical Modeling and Auto Drafting. On the base of parameters the program creates the drawing: Stair Plan and Elevation.
Stair, Rail, Calculator, Slope, Bevel,

 2)   SolidStructural 10.1
SolidStructural - 3D Steel AuDetailing System running inside AutoCAD
Detailing, steel, autocad, structural, stair, beam, rail, column, fabrication,