Browse free open source Lisp Interpreters and projects below. Use the toggles on the left to filter open source Lisp Interpreters by OS, license, language, programming language, and project status.

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • Picsart Enterprise Background Removal API for Stunning eCommerce Visuals Icon
    Picsart Enterprise Background Removal API for Stunning eCommerce Visuals

    Instantly remove the background from your images in just one click.

    With our Remove Background API tool, you can access the transformative capabilities of automation , which will allow you to turn any photo asset into compelling product imagery. With elevated visuals quality on your digital platforms, you can captivate your audience, and therefore achieve higher engagement and sales.
    Learn More
  • 1
    CLISP - an ANSI Common Lisp
    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.
    Leader badge
    Downloads: 193 This Week
    Last Update:
    See Project
  • 2
    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.
    Leader badge
    Downloads: 52 This Week
    Last Update:
    See Project
  • 3
    ECL development has moved to https://gitlab.com/embeddable-common-lisp/ecl
    Downloads: 2 This Week
    Last Update:
    See Project
  • 4

    TXR

    Text scraping and data munging language.

    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.
    Downloads: 2 This Week
    Last Update:
    See Project
  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
    Start Free
  • 5
    Little b is a Lisp-based language which allows scientists to build shareable, reusable mathematical models of complex systems based on shared parts. The initial focus is molecular and multicellular networks. Project web page: http://www.littleb.org
    Downloads: 2 This Week
    Last Update:
    See Project
  • 6
    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.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 7
    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.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 8

    sealisp

    Lisp interpreter for the PSP + UNIX-clones.

    This is a Lisp interpreter which will eventually be ANSI standard compliant. It currently compiles for UNIX-clones and the PSP, it has no external dependencies, with the garbage collector and numeric library and all other components being home made, from scratch. Working so far: * Automatic precise garbage collector. * Procedural macros. * Computer algebra library * A bunch of useful primitives. * A fairly small, but useful standard library. In the PSP build, the following additional features are available: * Some primitives for graphics on the PSP. --- The PSP has no decent hot-swappable coding language, and it can't multi-task. Therefore, this interpreter supports Emacs-like multi-tasking on the PSP. See: Several frames+windows each running their own lisp program from a single core.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 9
    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.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Your top-rated shield against malware and online scams | Avast Free Antivirus Icon
    Your top-rated shield against malware and online scams | Avast Free Antivirus

    Browse and email in peace, supported by clever AI

    Our antivirus software scans for security and performance issues and helps you to fix them instantly. It also protects you in real time by analyzing unknown files before they reach your desktop PC or laptop — all for free.
    Free Download
  • 10
    An Arc interpreter implemented in Java. Arc is a dialect of Lisp.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    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.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    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.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    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.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    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.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    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.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    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.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Free & Compact Lisp Library for Java 5.0 and later
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18

    Firefly's Foxfire

    A lisp system for embedded systems.

    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    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
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    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.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    IPSIL is an embedable lisp interpreter which uses dynamic binding and somewhat CommonLISPish syntax
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    ISLISP contrib is a set of lisp libraries for the "ISO/IEC 13816:1997(E) : Programming Language ISLISP", the International Standard version of Lisp standardized by ISO in 1997.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    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
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    JLLL - Java Lisp Like Language. Everything are Objects! Classes, methods, functions, arguments and so on are Objects. This language uses Lisp syntax.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    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.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • Next
Want the latest updates on software, tech news, and AI?
Get latest updates about software, tech news, and AI from SourceForge directly in your inbox once a month.