Windows Script Host
Windows Script Host (WSH) is a Windows administration tool. WSH creates an environment for hosting scripts. That is, when a script arrives at your computer, WSH plays the part of the host — it makes objects and services available for the script and provides a set of guidelines within which the script is executed. Among other things, Windows Script Host manages security and invokes the appropriate script engine. WSH is language-independent for WSH-compliant scripting engines. It brings simple, powerful, and flexible scripting to the Windows platform, allowing you to run scripts from both the Windows desktop and the command prompt.Windows Script Host is ideal for non-interactive scripting needs, such as logon scripting, administrative scripting, and machine automation. Windows Script Host provides several objects for direct manipulation of script execution, as well as helper functions for other actions. Using these objects and services, you can accomplish tasks such as the following: Print messages to the screen, Run basic functions such as CreateObject and GetObject, Map network drives, Connect to printers, Retrieve and modify environment variables & Modify registry keys.



Visual Basic Script
Visual Basic Scripting Edition brings active scripting to a wide variety of environments, including Web client scripting in Microsoft Internet Explorer and Web server scripting in Microsoft Internet Information Service. It can also be developed in conjunction with Windows Script Host to provide task automation within the Windows Shell.



Javascript
JScript is an interpreted, object-based scripting language. Although it has fewer capabilities than full-fledged object-oriented languages like C++, JScript is more than sufficiently powerful for its intended purposes. JScript is not a cut-down version of another language (it is only distantly and indirectly related to Java, for example), nor is it a simplification of anything. It is, however, limited. You cannot write stand-alone applications in it, for example, and it has no built-in support for reading or writing files. Moreover, JScript scripts can run only in the presence of an interpreter or "host", such as Active Server Pages (ASP), Internet Explorer, or Windows Script Host.