Open Source Interpreters

CLISP is a portable ANSI Common Lisp implementation and development environment by Bruno Haible. Interpreter, compiler, debugger, CLOS, MOP, FFI, Unicode, sockets, CLX. UI in English, German, French, Spanish, Dutch, Russian, and Danish.

BASIC-256 is an easy to use version of BASIC designed to teach anybody how to program. A built-in graphics mode lets them draw pictures on screen in minutes, and a set of easy-to-follow tutorials introduce programming concepts through fun exercises, 2021-08-05 - Ubuntu and other LINUX users can install the latest version with snap: sudo snap --beta basic256

NppCalc - plugin for evaluates the expressions in the Notepad++ NppCalc used to work with math, trigonometry, statistics, combinatorics, arrays, sets, bits, strings, dates, color, image, measurement, file and folder, RS-232, TCP/IP, encoding, encryption, hashing, compression, etc, Over 400 functions. Q: How does this work? A: Just type function name and press Enter!

ScummVM is a cross-platform interpreter for many point-and-click adventure games. This includes LucasArts SCUMM games (such as Monkey Island 1-3, Day of the Tentacle, Sam & Max, ...), many of Sierra's AGI and SCI games (such as King's Quest 1-6, Space Quest 1-5, ...), Discworld 1 and 2, Simon the Sorcerer 1 and 2, Beneath A Steel Sky, Lure of the Temptress, Broken Sword 1 and 2, Flight of the Amazon Queen, Gobliiins 1-3, The Legend of Kyrandia 1-3, many of Humongous Entertainment's children's SCUMM games (including Freddi Fish and Putt Putt games) and many more. The project mailing lists have been moved to http://lists.scummvm.org The project tracker has been moved to https://bugs.scummvm.org

A Graphical Developement Environment based on a Basic Interpreter with object extensions.

ANS Forth for Win32 and Linux/x86 (used to compile the following SF projects: acWEB, acFTP, acFreeProxy, acSMTP, Forth-Script)

This is fast 32bit FORTH system for PalmOS 2.x/6.x having the following features: Programming directly on PalmOS device, Full ANS 94 compatibility, Fast 32bit and 64bit arithmetic, Multitasking kernel, Supporting PalmOS from 2.0 to 6.0

Gentee is a friendly full-scale and free programming language. It is easy-to-master and can be a reliable assistant in your everyday work. Software developers can easily use it in their applications.

A re-implementation of the LISP-like 'Installer' scripting language included with AmigaOS as of version 2.1. InstallerLG aims to be fully compatible with the original as described in the V43.3 documentation. Most of the resource related limitations of the Commodore implementation are gone and the GUI has been replaced by a MUI / Zune based one.

Refal.NET - Versatile, Compact yet Powfull Text Transformer and Compiler-Writing System. Based on Refal.NET Virtual Machine (+Refal.NET Compiler), this RAD-tool might be used for rapid prototyping, decreasing up to 10 times development efforts.

C-smile OOL is a scripting language with C++-like grammar. It has compiler, VM running bytecodes and C++ extendible runtime. Intended to run in standlone and embedded mode.

Clipper/XBase compatible compiler with initial support other xBase dialects. Multitasking, OOP,SIX/Comix, SQL and ODBC drivers,a C-API for third-party developers, a few wrappers for popular libraries (such as BZIP, GZIP, GD, Crypto, and Fcgi), ....

Primary aim of this project is a creation of combine interpreter able to execute as much as possible esoteric languages.

Tools to incrementally build customised Forth Virtual Machines for embedded applications. Token compiler converts token description into C code templates. PC console application includes FVM, it is used to compile and debug bytecodes for target FVM.

Forpost is an embeddable, interpreted stack-based(Forth-like) language which has simple, compact and effective implementation in ANSI C. Main features: heterogeneous arrays, higher-order functions, program/data equivalence.

Gimp User Filter is a plugin for The Gimp (http://www.gimp.org/), originally written by Jens Restemeier back in 1997. This project is about maintaining the plugin, keeping it compatible with current versions of Gimp, and eventually extending its features

ICED (Inline Chemical Equations Drawer) is the implementation of the web based chemical markup language, which can be used as a part of HTML layout. Its purpose is the visualization of chemical structural formulas, equations and other chemical info.

Ironseed is a crossplatform binary version-compatible programming language, an answer to Microsoft COM technology which also does not have such limitations.

This project is the port of Lua programming language to Java platform. It contains the bytecode compiler and interpreter, that use the same bytecode format as the original version, and partially support standard Lua library.

Lemick is a project to make a programming language similar to those traditional Basic implementations but with all the attributes of the modern programming tool

Little Wizard is a development environment for children. It is intended to be used by primary school children to learn about the main elements of real computer languages. Little Wizard works under Linux and Windows 2000/XP.

MeMo (stands for Meta-Model) is planned as Generic Programming Language & IDE, as flexible & smart as it is possible for computer application, including adjustable syntax, algorithm reduction. Ideally, it has to contain AI for interacting with the user.

MixNet is a compiler of Mixal assembly language described in Knuth's "The Art of Computer Programming" for Microsoft.NET framework. MixNet generates .NET executable files. All source code is written in C#.

Open Basic (OB) is an implementation of BASIC programming language interpreter. OB is developed for embedding into user application as scripting language. OB is distributed as source code under MIT License.

Alternative PHP interpreter with new opportunities.