SXJavaScript is a library for Delphi and C++Builder. It can parse and interpret (i.e. execute at runtime) ECMAScript programs. ECMAScript is a base of the well-known JavaScript language, used in web sites developing. SXJavaScript interprets ECMAScript of version 3 and JavaScript 1.2 (except Regular Expressions). The library is well-optimized and has a very high performance.

Lots of programs use their internal languages and interpreters to execute programs, wrote according to those languages:

JavaScript is interpreted by all web browsers (Firefox, Mozilla, Netscape, Internet Explorer, Opera, etc).

VBScript can be interpreted by Internet Explorer and all Microsoft Office applications.

MaxScript is used in 3D Studio MAX.

ActionScript is used in Macromedia Flash.

Using SXJavaScript Library, you can develop your own scripting language and interpret it in your own applications.
SXJavaScript is already used in SXBandMaster Traffic Explorer for TCP/IP Networks ( www.sxbandmaster.com ). In that program a user can write a script, which will detect whether to dump a packet or not (a script can check sender IP, port and other parameters).