Open Object Rexx is an object-oriented scripting language. It is designed for "non-programmer" type users, so it is easy to learn and easy to use, and provides an excellent vehicle to enter the world of object-oriented programming without much effort. It extends the procedural way of programming with object-oriented features that allow you to gradually change your programming style as you learn more about objects.
The KornShell language is an interactive command language that provides access to the Unix system and to many other systems, on the many different computer systems on which it is implemented. The KornShell language is also a complete, powerful, high-level programming language for writing applications, often more easily and quickly than with other high-level languages. This makes it especially suitable for prototyping. There are two other widely used shells, the Bourne shell developed by Steven Bourne at AT&T Bell Laboratories, and the C shell developed by Bill Joy at the University of California. ksh has the best features of both, plus many new features of its own. Thus ksh can do much to enhance your productivity and the quality of your work, both in interacting with the system, and in programming. ksh programs are easier to write, and are more concise and readable than programs written in a lower level language such as C.
ExprTk is a C++ mathematical expression library, a simple to use, easy to integrate, and extremely efficient and fast mathematical expression parsing and evaluation engine. The parsing engine supports various kinds of functional and logic processing semantics, and is easily extensible.