Create folders in which to unzip the downloads below.

Unzip your downloads using:  7-zip


RogCAD 3D CAD modeling software : home page
-------------------------------


  rogcaddos-bas.7z
  RogCAD for DOS, compiled as an executable using
  QuickBASIC for DOS.  Runs on XP operating system
  or earlier, or use under DOSBox on any Windows
  operating system through Windows 10.


  rogcaddos-c.7z
  RogCAD for DOS, compiled as an executable using
  QB64.  This version is actually compiled in C,
  and therefore runs much faster than the version
  above. It's also a much larger file.  Runs on
  any computer.  No DOSBox needed.


  rogcadwin.7z
  RogCAD for Windows, compiled as an executable
  using Visual BASIC.  Runs on any Windows
  operating system from Windows 95 through 
  Windows 10.


  GirderPanel.7z
  RogCAD Virtual Girder and Panel Building Set,
  compiled as an executable using Visual BASIC.
  Runs on any Windows operating system from
  Windows 95 through Windows 10.


  PALMAST-64.7z
  Palette Master - a palette generator and
  interface design assister for QuickBASIC 
  programming.  Compiled in C as an executable
  using QB64.  Runs on any computer.  
  No DOSBox needed.


  FOREBACK.BAS.7z
  FOREBACK.BAS - a palette generator and
  interface design assister for GW-Basic 
  programming.  This is the source code 
  version -- you can customize the
  startup palette in the program code.


  st201f.zip
  Screen Thief - a screen capture program for
  DOS.  Works flawlessly on any Windows XP
  machine.



-------------------------------


Download DOSBox, the best emulator of DOS, at:

https://www.dosbox.com




Download PC-BASIC, the best emulator of GW-BASIC, at:

https://robhagemans.github.io/pcbasic

or

https://sourceforge.net/projects/pcbasic/files/latest/download