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Harbour is a compiler for the xBase superset language often referred to as Clipper (the language that is implemented by the CA-Clipper compiler).

Maude is a high-performance reflective language and system supporting both equational and rewriting logic specification and programming for a wide range of applications. Maude has been influenced in important ways by the OBJ3 language, which can be regarded as an equational logic sublanguage. Besides supporting equational specification and programming, Maude also supports rewriting logic computation. Rewriting logic is a logic of concurrent change that can naturally deal with state and with concurrent computations. It has good properties as a general semantic framework for giving executable semantics to a wide range of languages and models of concurrency. In particular, it supports very well concurrent object-oriented computation. The same reasons making rewriting logic a good semantic framework make it also a good logical framework, that is, a metalogic in which many other logics can be naturally represented and executed. Maude supports in a systematic and efficient way logical reflection. This makes Maude remarkably extensible and powerful, supports an extensible algebra of module composition operations, and allows many advanced metaprogramming and metalanguage applications. Indeed, some of the most interesting applications of Maude are metalanguage applications, in which Maude is used to create executable environments for different logics, theorem provers, languages, and models of computation.

Nickle is a programming language based prototyping environment with powerful programming and scripting capabilities. Nickle supports a variety of datatypes, especially arbitrary precision numbers. The programming language vaguely resembles C. Some things in C which do not translate easily are different, some design choices have been made differently, and a very few features are simply missing. Nickle provides the functionality of Unix bc, dc, and expr in much-improved form. It is also an ideal environment for prototyping complex algorithms. Nickle's scripting capabilities make it a nice replacement for spreadsheets in some applications, and its numeric features nicely complement the limited numeric functionality of text-oriented languages such as AWK and Perl.

The newLISP is a scripting language for developing web applications and programs in general and in the domains of artificial intelligence (AI) and statistics.

The newLISP is a scripting language for developing web applications and programs in general and in the domains of artificial intelligence (AI) and statistics.

Niklaus Wirth's language Oberon-2 implemented by a german university at Kaiserslautern. More information about Oberon is available from its webpage at http://www.oberon.ethz.ch/.

Erlang is a programming language used to build massively scalable soft real-time systems with requirements on high availability. This port provides Java integration support for Erlang.

Steel Bank Common Lisp (SBCL) is a Open Source development system for ANSI Common Lisp. It provides an interactive environment including an integrated native compiler, interpreter, and debugger.

SIOD is a small-footprint implementation of the Scheme programming language that is provided with some database, Unix programming and cgi scripting extensions.

Erlang is a programming language used to build massively scalable soft real-time systems with requirements on high availability. This port provides WX bindings for Erlang.