Open Source BSD Interpreters

Agena is an easy-to-learn procedural programming language suited to be used in scientific, mathematical, scripting, networking, and many other applications. Binaries are available for Solaris, Windows, Linux, OS/2, Mac OS X, Raspberry Pi and DOS.

Home of the Open Object Rexx Project. ooRexx is the open source version of IBM's Object REXX Interpreter. It is upwardly compatible with classic REXX and will execute classic REXX programs unchanged. The project is managed by the Rexx Language Association.

Jainja is a JVM (Java Virtual Machine) written in Java. The VM is developed by using the smallest possible subset of Java in order to run on top of multiple environments : Java SE, JavaME, Android, Javascript, and even natively.

CLIPS is a forward-chaining rule-based programming language written in C that also provides procedural and object-oriented programming facilities.

Tool Command Language (Tcl) is an interpreted language and very portable interpreter for that language. Tcl is embeddable and extensible, and has been widely used since its creation in 1988 by John Ousterhout. Bug reports to http://core.tcl.tk/tcl/ Follow code development at http://core.tcl.tk/tcl/

FTH provides running stand alone Forth scripts like Ruby etc. and using Forth as an extension language to your application.

Logic Programming and Deductive Database system (Tabled Prolog) for Unix, Mac, and Windows.

Community Z Tools Project (CZT): Tools for editing, typechecking and animating Z specifications and related notations. Includes a Java framework for building formal methods tools. NOTE: development of CZT has now moved to GitHub: https://github.com/community-z-users/czt

UJAC is a collection of Java components that may be useful for your project. It provides a powerful expression interpreter, a iText based document processing engine that generates PDF documents based on XML templates, a charting library and much more.

Serpent is a real-time scripting language inspired by Python but completely reimplemented to support real-time garbage collection and multiple instances of the virtual machines running on independent threads.

Lush is a Lisp dialect with extensions for object-oriented and array-oriented programming. Lush is intended for prototyping numerically intensive applications and is designed for easy integration of existing C/C++/Fortran codes.

Interpreter, compiler, libraries, documentation and examples for the Seed7 programming language. Seed7 is a general purpose programming language. It is a higher level language compared to Ada, C/C++ and Java. In Seed7 new statements and operators can be declared easily. Functions with type results and type parameters are more elegant than a template or generics concept. Object orientation is used where it brings advantages and not in places where other solutions are more obvious. Seed7 spares no effort to support portable programming. Several driver libraries assure that the access to operating system resources such as files, directories, network, clock, keyboard, console and graphics are done in a portable way. Although Seed7 contains several concepts from other programming languages, it is generally not considered a direct descendant of any other programming language.

Eagle (Extensible Adaptable Generalized Logic Engine) is an implementation of the Tcl scripting language for the Common Language Runtime (CLR).

Fuber is an interpreter that runs applications written in the language defined by the IEC 61499 standard. IEC 61499 is a programming standard for distributed control and measurement systems.

ADP (Another Data Processor) is a programing language that is designed for Web database programing. It is a scripting language and a lightweight programming language in which it is possible to mix SQL easily. It is easy to install. ADP is base on Prolog. But ADP uses only the backtrack and unification. The syntax is original and likes a another scripting language, supports method call.

The gawkextlib project provides several extension libraries for gawk (GNU AWK), as well as libgawkextlib containing some APIs that are useful for building gawk extension libraries. These libraries enable gawk to process XML data, interact with a PostgreSQL database, use the GD graphics library, and perform unlimited precision MPFR calculations. These extensions work with GNU AWK version 4.1.1 or later. We have created a framework for packaging gawk extensions, and we welcome further contributions. Recent additions include haru, redis, and select for I/O multiplexing.

tcllib is a Tcl-only library of standard routines for Tcl (no compiling required). This project also houses the CVS modules for BWidgets, tclbench, mclistbox, tclapps, and tklib. All of these are deprecated in favor of the fossil repositories found at the sites listed below. Bug reports to https://core.tcl.tk/tcllib https://core.tcl.tk/tklib https://core.tcl.tk/tclapps https://core.tcl.tk/bwidget https://core.tcl.tk/tclbench https://core.tcl.tk/mclistbox https://core.tcl.tk/widget Follow code development at the same sites.

An implementation of the the ANSI Standard REXX Programming Language, available for most operating systems.

SciTECO is an interactive TECO dialect, similar to Video TECO. It also adds features from classic TECO-11, as well as unique new ideas. Project development takes place at Github: https://github.com/rhaberkorn/sciteco

BAIK is a scripting language which syntax is in Indonesian for Windows, iOS, Android and Linux. BAIK runs on Server, Desktop, Laptop, Mobile gadget and Embedded Computer IoT. It supports basic text input output, Animation, PDF, UTF8, Printer, simple OOP, GUI, CGI, Databases, Graphics and TCP/IP. "BAIK adalah bahasa komputer dalam bahasa Indonesia"

Rexx/CURL is a Rexx extension to enable Rexx programmers to control the cURL interface.

Unicon is a very high level object-oriented network- and graphics-savvy programming language with a syntax similar to Pascal or C. Goal-direction, backtracking, patterns and novel data structures make Unicon ideal for rapidly solving complex problems.

aphasia is an advanced scripting language for the web. It features a type-safe core, C++ modules with signatures, an optimizing "compiler", higher-order functions, built-in database support, garbage collection, and more.

LuaBinaries is a distribution of the Lua libraries and executables compiled for several platforms.

Pyexpander is a powerful macro processor based on python. Instead of simple macro replacement it offers evaluation of arbitrary python expressions and execution of python code. Pyexpander is Turing Complete.