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scheme (49)

Alive Heckert gnu.tiny.png
GNU Alive is a periodic ping program. It functions similarly to ‘ping -n -i PERIOD HOST’ (so if you are comfortable typing that at a shell prompt you probably do not need GNU Alive).
Bigloo is an implementation of the Scheme programming language. It relies on an optimizing compiler from Scheme to C. Bigloo enables connections between Scheme code and C code. It proposes many extensions to Scheme such as a regular parser compiler, an lalr parser compiler, pattern matching, an object layer, etc.
CHICKEN is a simple Scheme-to-C compiler supporting the language features as defined in the 'Revised^5 Report on Scheme'. It supports full tail-recursion and first-class continuations. The code it generates is quite portable; compiled files generated by it (including itself) should work with either no or minor changes on other systems. Linking to C modules and C library functions is straightforward, and compiled programs can easily be embedded into existing C code. The package includes many extra libraries.
Combine Heckert gnu.tiny.png
Pronounced COMbine, like the farm implement, combine matches any number of files to a file, set of files, or input stream. When built on a system with Guile available, it uses Guile to provide extensibility for filtering and data transformation. Additional features include hierarchy handling, a Guile module adapted from the Emacs calendar for performing date arithmetic, and outer joins on either or both sides of a match.
* "PLT Scheme is now Racket." 'DrScheme' is a graphical environment for developing programs using the Scheme, MzScheme, and MrEd programming languages. Features include source text highlighting of syntax and run-time errors, support for multiple levels of Scheme from beginner to advanced, an algebraic stepper for the beginner language, interactive and graphical static analysis, a graphical user interface (GUI) library, objects, threads, modules, exceptions, TCP/IP, regular expressions, and filesystem support.
FreeSnell is a program which computes optical properties of multilayer thin-film coatings. Dielectric, metallic, and granular metallic films are supported. The FreeSnell package includes a SCM script (program) "nk" to create, manage, and query a refractive-index spectral database. FreeSnell is an application of the SCM Scheme implementation and the WB B-tree database package.
'Gauche' is an R5RS Scheme implementation that ia meant to be a handy tool for daily work. Its goals include quick startup, a built-in system interface, and native multilingual support. It has an object-oriented system similar to STklos and Guile. It natively supports UTF-8, EUC-JP, and Shift-JIS multibyte encodings.
The GNU/Linux Audio Mechanics project will be a complete sound editor for GNU/Linux systems. GLAME so far has a graphical frontend to set up filter networks and perform basic audio editing tasks. A Scheme-based command line editor offers low-level access for scripting purposes.
Gnubg Heckert gnu.tiny.png
GNUBG is a strong backgammon program (world-class with a bearoff database installed) usable either as an engine by other programs or as a standalone backgammon game. In addition to supporting simple play, it also has extensive analysis features, a tutor mode, adjustable difficulty, and support for exporting annotated games. It can be played either from a GTK+ graphical interface, optionally with a 3D board, or from a simple text console. It was at first extensible on platforms that support Guile.
Gnucash Heckert gnu.tiny.png
GnuCash is personal and professional financial-accounting software. It can be used to track bank accounts, stocks, income and expenses, based on the double-entry accounting practice. It includes support for QIF/OFX/HBCI import and transaction matching. It also automates several tasks, such as financial calculations or scheduled transactions.

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