Here you can download demo version of NB without limitations of functionality. The difference is in the license. If you purchase the program, it is possible to resell it.
The program works under Windows 32 bit. Windows 2000, Windows XP, and later versions.
Procedure of installation creates the program group and puts the shortcut on the Desktop.
Download the self-extracting archive. Run it. Follow the instructions.
Download      NB 5.1 The timestamp of the EXE file: 11.10.2016 17:16
Silk Road is the ready knowledge base that provides natural language dialogue about the ancient trade route. It spanned thousands of kilometres and existed for more than a millenium. Really, there is what to talk about. View slides and ask questions.
Download Silk Road 1.4 Released 08.31.2015
Help file for Windows 10.
You can also download from the popular site of CNet (connection not encrypted).         NB         Silk Road
WinNB Copyright (c) 1998-2017 I. Volkov