Free programming language software for linux

Kits JavaScript Brainf*ck Interpreter is a rather fast interpreter for the Brainf*ck esoteric programming language.

Frink is a practical calculating tool and programming language designed to help us all to better understand the world around us, to help us get calculations right without getting bogged down in the mechanics, and to make a tool thats really useful in the real world.
Perhaps youll get the best idea of what Frink can do if you skip down to the Sample Calculations further on this document. Come back up to the top when youre done.
Frink language was named after one of my personal heroes, and great scientists of our time, the brilliant Professor John Frink.
Main features:
- Tracks units of measure (feet, meters, tons, dollars, watts, etc.) through all calculations and allows you to add, subtract, multiply, and divide them effortlessly, and makes sure the answer comes out correct, even if you mix units like gallons and liters.
- Arbitrary-precision math, including huge integers and floating-point numbers, rational numbers (that is, fractions like 1/3 are kept without loss of precision,) and complex numbers.
- Advanced mathematical functions including trigonometric functions (even for complex numbers,) factoring and primality testing, and base conversions.
- Unit Conversion between thousands of unit types with a huge built-in data file.
- Date/time math (add offsets to dates, find out intervals between times,) timezone conversions, and user-modifiable date formats.
- Translates between several human languages, including English, French, German, Spanish, Portuguese, Dutch, Korean, Japanese, Russian, Chinese, Swedish, and Arabic.
- Calculates historical buying power of the U.S. dollar and British pound.
- Calculates exchange rates between most of the worlds currencies.
- Powerful Perl-like regular expression capabilities and text processing.
- Supports Unicode throughout, allowing processing of almost all of the worlds languages.
- Reads HTTP and FTP-based URLs as easily as reading local files, allowing fetching of live web-based data.
- Runs on most major operating systems (anything with Java 1.1 or later,) as an applet, through a web-based interface, on a wireless Palm VII, on an HDML- or WML-based webphone, and on many mobile phones and hand-held devices.
- Installs itself on your system in seconds using Java Web Start and automatically keeps itself updated when new versions of Frink are released.
- Runs with a Graphical User Interface (both Swing and AWT) or a command-line interface.
- User interface has a Programming Mode which allows you to write, edit, save, and run extremely powerful programs even on a handheld device.
- Powers Frink Server Pages, a system for providing dynamic web pages powered by Frink.
- Frink is a full-fledged programming language with arrays, dictionaries, functions, loops, even object-oriented programming and self-evaluation.
- Frink allows Object-Oriented Programming, which allows you to create complex data structures that are still easy to use.
- Java Introspection layer allows you to call any Java code from within Frink.
- Frink can also be embedded in a Java program, giving your Java programs all the power of Frink.
- Did I mention its free? If you find it useful, please donate something. Id really appreciate it!
Enhancements:
- This release fixes a problem in break statements that might lead to a "Break statement used outside a loop" error.

Neko is an interpreter and programming language. It has been designed to provide a common runtime for several different languages.
Learning and using Neko is very easy, but youre not supposed to directly program in Neko. Instead, you can write a generator from your preferred language to Neko and then use the Neko runtime to compile, run, and access libraries.
eko is a good way for language designers to focus on design and reuse a fast and well-designed runtime, as well as existing libraries for accessing filesystem, network, databases, xml...
Neko language syntax have been created with "easy to parse" and "easy to generate" in mind. It is not especially designed to be written by a programmer but more to be generated from a higher level language.
For example one could write easily a PHP-to-Neko or a Java-to-Neko that would generate equivalent code but using Neko syntax and semantics instead of PHP or Java ones.
In particular, there are not multiple levels of expression, as in C. Every statement is also an expression, and thus enable some constructs that are not possible in other languages (for example : return if(x) { ... } else { ... }). This make the generation to Neko from functional languages more easy.
he syntax is parsed using a left-to-right LL(1) parser. That means that after reading a token we have enough information to know which expresion it will produce. This enable very lightweight parser which is easy to improve without creating ambiguities.
Enhancements:
- A bug was fixed in JIT.
- Performance was improved.
- UI and process IO APIs were added.

Language::Logo Perl module is an implementation of the Logo programming language.

SYNOPSIS

use Language::Logo;

my $lo = new Logo(update => 20);

$lo->command("setxy 250 256");
$lo->command("color yellow");
$lo->command("pendown");

# Draw a circle
for (my $i = 0; $i < 360; $i += 10) {
$lo->command("forward 10; right 10");
}

$lo->disconnect("Finished...")

This module provides an implementation of the Logo programming language, with all of the necessary drawing primitives in a Tk Canvas. The Canvas object is also referred to as the "screen".

The first construction of a Language::Logo object causes a server to be created in a separate process; this server then creates a Tk GUI with a Tk::Canvas for use by the clients "turtle", and responds to all requests from the clients commands. In this way, multiple clients may be constructed simultaneously -- each one with its own "turtle".

In this first release, not all of the Logo language is implemented. Rather, the primary commands available are those which directly affect the turtle, and are related to drawing on the screen. The intent is to use the Logo in conjunction with Perl as a sort of "hybrid" language; Perl us used as the higher-level language layer through which all loop constructs, conditionals, and data-manipulation is done. This allows for a substantial level of programming power.