Open Source Lisp 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.

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.

ACDK - Artefaktur Component Development Kit - is a platform independent C++-framework similar to Java or C#/.NET for generating distributed and scriptable components and applications.

This project is dedicated to developing more readable format(s) for Lisp-based languages (such as Common Lisp and Scheme) and implementing those formats (readers, pretty-printers, editor macros, etc.). MIT license preferred, to spread them widely.

ECL development has moved to https://gitlab.com/embeddable-common-lisp/ecl

Alef++, is a new programming language like Perl and Lisp syntax, with a many changing in classical languages designs, her specification designed to be implemented for any VM, by default can access to any private/protected/default Java fields or methods.

JLisa, \"Java Lisp-based Intelligent Software Agents\", is based on Lisa, http://lisa.sourceforge.net/, a production rule system similar to Jess. It runs in java through ABL, armed-bear Lisp, http://www.armedbear.org.

Ksi is a portable, embeddable Scheme implementation written in C.

An interactive, Lisp-like language for .Net scripting and development, having deep .Net integration, sharing type system, GC and other runtime services etc., with transparent access to .Net w/o a FFI or wrappers.

xacc.ide is a opensource IDE aimed at mainly .NET development. It has a code editor written in 100% C# code, which is faster than most commercial offerings.

Jess-mode is a collection of Emacs Lisp files designed to facilitate the development of Java Expert System Shell (JESS) applications. Currently, the package consists of a major mode for editing source and an inferior mode used to run the Jess interpreter

NOTE: TXR used SourceForge for hosting binary downloads only. As of July 26, 2016, TXR uses the site Bintray (bintray.com) for hosting binary downloads. Do not look for new releases here! TXR combines a text scraping language combined with an innovative Lisp dialect geared toward data munging. TXR cribs ideas from modern scripting languages, multiple Lisp dialects, functional languages, and Unix tools.

It is a former "iLisp" project (N.B. - not emacs ilisp!), which is a small and embedabble Lisp-like interpreter.

An interpreter for a dialect of the lisp language family.

An Arc interpreter implemented in Java. Arc is a dialect of Lisp.

Berkeley Logo is an interpreter for the Logo programming language. It was originally written in C by Brian Harvey and his students. We are rewriting it to use the wxWidgets graphics library.

CLearJ is a clean Java-implementation of Common Lisp. The big goals are ANSI standard compliance, interoperability with Java and integration with scripting environments. This project is meant to be a sibling to CLearSharp, with sharing of implementation.

CLearSharp is a clean C#-implementation of Common Lisp. The big goals are ANSI standard compliance, interoperability with Java and integration with scripting environments. This project is meant to be a sibling to CLearJ, with sharing of implementation.

ClearLisp is a Common Lisp interpreter written in C# with a large library including all of .NET and an extensive object model. Supports IIS and XSP or Apache with mono. Includes sample code of a personal, file based wiki web application.

The CommGen platform is intended to be a simple, scalable integration platform for small to medium problem sets. The architecture is simple, consisting of a distributed kernel, distributed O/S, agent and application layer.

Free & Compact Lisp Library for Java 5.0 and later

FrAid(FRactal AID) is an interface to Java, allowing it to proc. math. data(functions/equations). A compl. standalone system utilizing the FrAid prog. lang. is available(no need to be Java programmer to use it!). Use instead of Matlab. High res. graphics

The purpose of hilisp is to create a lisp interpreter in hindi / devanagri unicode fonts. This will facilitate teaching programming to hindi speaking children at an earlier age.

IPSIL is an embedable lisp interpreter which uses dynamic binding and somewhat CommonLISPish syntax