I\'m interested to know who uses JScript.Net and for what sort of applications. Whenever I\'m reading MSDN .Net documentation, I always notice the JScript samples but in all
JScript .NET is a modern scripting language with a wide variety of applications. It is a true object-oriented language, and yet it still keeps its "scripting" feel. JScript .NET maintains full backwards compatibility with previous versions of JScript, while incorporating great new features and providing access to the common language runtime and .NET Framework (from JScript.NET).
Besides, you might find this stackoverflow post helpful as well: Can JScript.NET be used to script a .NET application?
As for who is using, I am honestly not aware of (I am pretty sure there are out there).
Read Introducing JScript.NET.
My personal thought was that it could be awsome for web developers who're used to write in plain JScript and want to get the benefits of .NET without need to learn a new language, or for those who want to have all their code written in one language.