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MIX is Donald Knuth's mythical computer as described in his monumental work The Art Of Computer Programming. As any of its real counterparts, the MIX features registers, memory cells, an overflow toggle, comparison flags, input-output devices, and a set of binary instructions executable by its virtual CPU. You can programme the MIX using an assembly language called MIXAL, the MIX Assembly Language. The MIX Development Kit offers an emulation of MIX and MIXAL. The current version of MDK includes the following applications: - mixasm A MIXAL compiler, which translates your source files into binary ones, executable by the MIX virtual machine. - mixvm A MIX virtual machine which is able to run and debug compiled MIXAL programs, using a command line interface with readline's line editting capabilities. - gmixvm A MIX virtual machine with a GTK+ GUI which allows you running and debugging your MIXAL programs through a nice graphical interface. - mixvm.el An elisp program which allows you to run mixvm within an Emacs GUD window, simultaneously viewing your MIXAL source file in another buffer.

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.

Mixal is a version the assembler and interpreter for Donald Knuth's mythical MIX computer, defined in: Donald E. Knuth, _The Art of Computer Programming, Vol. 1: Fundamental Algorithms_. Addison-Wesley, 1973 (2nd ed.) This preliminary release doesn't do floating point and has little documentation as yet, but it works well enough to be used in conjunction with the book.

This port contains standard, useful autoconf macros for detecting OCaml, findlib, OCaml packages, etc.

Nim (formerly known as "Nimrod") is a statically typed, imperative programming language that tries to give the programmer ultimate power without compromises on runtime efficiency. This means it focuses on compile-time mechanisms in all their various forms. Beneath a nice infix/indentation based syntax with a powerful (AST based, hygienic) macro system lies a semantic model that supports a soft realtime GC on thread local heaps. Asynchronous message passing is used between threads, so no "stop the world" mechanism is necessary. An unsafe shared memory heap is also provided for the increased efficiency that results from that model.

- nML is a dialect/harmony of Standard ML of New Jersey and Objective Caml. - nML is a higher-order and typed programming language. - nML does not stand against the C programming convention. - nML compiler is a compiler of the nML language using the Objective Caml compiler: nML parser + nML type-checker + nML-to-OCaml translator + the OCaml compiler.

A compiler for a simple language for programming the LEGO RCX or CyberMaster controllers. The language itself is "Not Quite C" and includes preprocessor and control structures very similar to the C language, but with restrictions imposed by the limitations of the RCX hardware/firmware itself. Besides compiling, nqc also provides functions for downloading the RCX firmware as well as uploading programs to and downloading from the RCX. The NQC home page includes documentation for the language itself including examples.

P2c is a tool for translating Pascal programs into C. The input consists of a set of source files in any of the following Pascal dialects: HP Pascal, Turbo/UCSD Pascal, DEC VAX Pascal, Oregon Software Pascal/2, Macintosh Programmer's Workshop Pascal, Sun/Berkeley Pascal, Texas Instruments Pascal, Apollo Domain Pascal. Modula-2 syntax is also supported. Output is a set of .c and .h files that comprise an equivalent program in any of several dialects of C. Output code may be kept machine- and dialect independent, or it may be targeted to a specific machine and compiler. Most reasonable Pascal programs are converted into fully functional C which will compile and run with no further modifications, although p2c sometimes chooses to generate readable code at the expense of absolute generality. P2c endeavors to insert notes and warning messages into the output code to point out areas which may require human intervention. Output code is arranged to be readable and efficient, and to make use of C idioms wherever possible. The main goal of the translation is to produce C files which are pleasant and "natural" enough to be acceptable as the new source files for a program. In a pinch, p2c will also serve as an ad hoc Pascal compiler. The p2cc script makes it easy to use p2c as a compiler.

Emacs lisp modules for the Python language.

A Python extension embedding SWI-Prolog PyProlog is a Python extension that permits direct access to an embedded PROLOG. The extension lends Python the efficient unification and backtracking of PROLOG, and allows a programmer to instrument Python classes with PROLOG code. Callbacks from PROLOG to Python are also supported.