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Racket is a set of tools for writing and running the PLT scheme programming language. It includes a graphical IDE (drracket) that features highlighting of the source of syntax and run-time errors, support for multiple language levels, an algebraic stepper, objects, modules, a GUI library, TCP/IP, and much more. It includes an extensive, hyper-linked help system called Help Desk, available from the Help menu, the plt-help command line tool, or through a web browser. The racket-textual port provides a text-only version of the Racket environment without X11 dependencies.

Racket is a set of tools for writing and running the PLT scheme programming language. It includes a graphical IDE (drracket) that features highlighting of the source of syntax and run-time errors, support for multiple language levels, an algebraic stepper, objects, modules, a GUI library, TCP/IP, and much more. It includes an extensive, hyper-linked help system called Help Desk, available from the Help menu, the plt-help command line tool, or through a web browser.

GCC, the GNU Compiler Collection, supports a number of languages. This port installs the C, C++, Fortran and Java front ends as gcc5, g++5, gfortran5, and gcj5, respectively. Gerald Pfeifer <gerald@FreeBSD.org>

Scheme 48 is an implementation of the Scheme programming language as described in the Revised^5 Report on the Algorithmic Language Scheme. It is based on a compiler and interpreter for a virtual Scheme machine. The name derives from our desire to have an implementation that is simple and lucid enough that it looks as if it were written in just 48 hours. We don't claim to have reached that stage yet; much more simplification is necessary. Scheme 48 is an implementation of the Scheme programming language as described in the Revised5 Report on the Algorithmic Language Scheme [6]. It is based on a compiler and interpreter for a virtual Scheme machine. Scheme 48 tries to be faithful to the Revised5 Scheme Report, providing neither more nor less in the initial user environment. (This is not to say that more isn't available in other environments; see below.) Scheme 48 is under continual development. Please report bugs, especially in the VM, especially core dumps, to scheme-48-bugs@s48.org. Include the version number x.yy from the "Welcome to Scheme 48 x.yy" greeting message in your bug report. It is a goal of this project to produce a bullet-proof system; we want no bugs and, especially, no crashes.

Rexx/Wrapper is a tool that wraps Rexx source or tokenised code into an executable. The Rexx source code can be optionally compressed and encoded to ensure that the original Rexx code cannot be viewed (unless you have the original encryption key). To use Rexx/Wrapper you need two extra bits of software: 1. A supported Rexx interpreter 2. A supported C compiler

Rubinius is an implementation of the Ruby programming language. The Rubinius bytecode virtual machine is written in C++, incorporating LLVM to compile bytecode to machine code at runtime. The bytecode compiler and vast majority of the core classes are written in pure Ruby. To interact with the rest of the system, the VM provides primitives which can be attached to methods and invoked. Additionally, FFI provides a direct call path to most C functions. Rubinius uses a precise, compacting, generational garbage collector. It includes a compatible C-API for C extensions written for the standard Ruby interpreter (often referred to as MRI Matz's Ruby Implementation).

GCC, the GNU Compiler Collection, supports a number of languages. This port installs the C, C++, Fortran and Java front ends as gcc5, g++5, gfortran5, and gcj5, respectively. Gerald Pfeifer <gerald@FreeBSD.org>

GCC, the GNU Compiler Collection, supports a number of languages. This port installs the C, C++, Fortran and Java front ends as gcc6, g++6, gfortran6, and gcj6, respectively. Gerald Pfeifer <gerald@FreeBSD.org>

GCC, the GNU Compiler Collection, supports a number of languages. This port installs the C, C++, Fortran and Java front ends as gcc7, g++7, gfortran7, and gcj7, respectively. Gerald Pfeifer <gerald@FreeBSD.org>

runawk is a small wrapper for AWK that implements a modules system and helps one to write the standalone AWK programs.