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

  • Outbound sales software Icon
    Outbound sales software

    Unified cloud-based platform for dialing, emailing, appointment scheduling, lead management and much more.

    Adversus is an outbound dialing solution that helps you streamline your call strategies, automate manual processes, and provide valuable insights to improve your outbound workflows and efficiency.
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  • Scalable Cloud APIs for Efficient PDF and eSign Workflows Icon
    Scalable Cloud APIs for Efficient PDF and eSign Workflows

    Integrate high-performance PDF, eSign, and document generation capabilities into your platform. Built for developers, proven at scale.

    Foxit provides a powerful suite of cloud-native APIs that help organizations automate, secure, and modernize document workflows. Built on scalable REST architecture, Foxit APIs enable developers to generate, convert, extract, sign, and display documents directly within applications—eliminating manual processes and accelerating digital operations.
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  • 1
    Maxima -- GPL CAS based on DOE-MACSYMA

    Maxima -- GPL CAS based on DOE-MACSYMA

    Computer Algebra System written in Common Lisp

    Maxima is a computer algebra system comparable to commercial systems like Mathematica and Maple. It emphasizes symbolic mathematical computation: algebra, trigonometry, calculus, and much more. For example, Maxima solves x^2-r*x-s^2-r*s=0, giving the symbolic results [x=r+s, x=-s]. It can also calculate with exact integers and fractions, native floating-point, and high-precision big floats. Maxima has user-friendly front-ends, an online manual, plotting commands, and numerical libraries. It features its own programming language, and many users have contributed useful packages in various areas over the decades. It is GPL-licensed and largely written in Common Lisp. Executables can be downloaded for Windows, Mac, Linux, and Android; source code is also available. An active community maintains and extends the system. Website: https://maxima.sourceforge.io Additional add-on packages for Maxima can be found at: https://github.com/maxima-project-on-github/maxima-packages
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    Downloads: 4,640 This Week
    Last Update:
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  • 2

    Steel Bank Common Lisp

    Common Lisp compiler and runtime

    A high performance Common Lisp compiler. In addition to standard ANSI Common Lisp, it provides an interactive environment including an a debugger, a statistical profiler, a code coverage tool, and many other extensions.
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    Downloads: 2,438 This Week
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  • 3
    OpenDCL
    OpenDCL is for AutoLISP programmers who want to replace AutoCAD's limited DCL (Dialog Control Language) user interface language with a rich set of modern Windows user interface elements.
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    Downloads: 281 This Week
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  • 4
    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.
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    Downloads: 273 This Week
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  • Comet Backup - Fast, Secure Backup Software for MSPs Icon
    Comet Backup - Fast, Secure Backup Software for MSPs

    Fast, Secure Backup Software for Businesses and IT Providers

    Comet is a flexible backup platform, giving you total control over your backup environment and storage destinations.
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  • 5
    REDUCE

    REDUCE

    A Portable General-Purpose Computer Algebra System

    REDUCE is an interactive system for general algebraic computations of interest to mathematicians, scientists and engineers. It can be used interactively for simple calculations but also provides a flexible and expressive user programming language. The development of the REDUCE computer algebra system was started in the 1960s by Anthony C. Hearn. Since then, many scientists from all over the world have contributed to its development. REDUCE has a long and distinguished place in the history of computer algebra systems. Other systems that address some of the same issues but sometimes with rather different emphasis are Axiom, Derive, Macsyma (Maxima), Maple, Mathematica and MuPAD. REDUCE primarily runs on either Portable Standard Lisp (PSL) or Codemist Standard Lisp (CSL), both of which are included in the SourceForge distribution. By modern standards, REDUCE is a surprisingly small and compact application, which runs well on all major operating systems.
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    Downloads: 119 This Week
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  • 6
    Metabase

    Metabase

    The simplest, fastest way to share business intelligence and analytics

    Metabase is the easiest way to let everyone in your company access business data and analytics, learn from it and ask questions. Even if you or your colleagues have no experience in SQL, you can easily summarize and visualize your data, share it and let your team ask questions about it. Metabase creates beautiful graphs and charts, with an easy-to-use dashboard where everyone can create, organize and share exceptionally visualized data. It supports a great number of databases, including Postgres, MySQL, Druid, MongoDB, SQLite and more. Setup literally takes 5 minutes.
    Downloads: 17 This Week
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  • 7
    wxMaxima

    wxMaxima

    Cross platform GUI for Maxima

    wxMaxima is a cross-platform graphical front-end for the computer algebra system Maxima based on wxWidgets. It provides nice display of mathematical output and easy access to Maxima functions through menus and dialogs. This project has moved to github and can be reached at http://wxmaxima-developers.github.io/wxmaxima/
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    Downloads: 69 This Week
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  • 8
    Nyquist

    Nyquist

    Nyquist is a language for sound synthesis and music composition.

    Nyquist is a language for sound synthesis and music composition. It is implemented in C and C++ and runs on Win32, OSX, and Linux. Nyquist combines a powerful functional programming style with efficient signal-processing primitives. Nyquist is also embedded as a scripting language in Audacity.
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    Downloads: 59 This Week
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  • 9
    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.
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    Downloads: 33 This Week
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  • Hybrid Bare Metal Cloud Infrastructure | Servers.com Icon
    Hybrid Bare Metal Cloud Infrastructure | Servers.com

    Scale, customize and manage your bare metal servers - all in one place.

    Three bare metal hosting solutions on one global network. Spin up on demand to cover peaks, then optimize for cost when usage stabilizes.
    Learn More
  • 10
    Lem

    Lem

    Common Lisp editor/IDE with high expansibility

    Lem is the editor/IDE well-tuned for Common Lisp. After installing lem, you can start developing in Common Lisp at once. You can skip over writing tidy settings or installing many plugins as you do on Emacs. Lem loads when starting up. Electron version is in the experimental stage.
    Downloads: 2 This Week
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  • 11
    doxymacs aims to make creating/using Doxygen-created documentation easier for the {X}Emacs user.
    Downloads: 11 This Week
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  • 12
    SuperCollider

    SuperCollider

    Real-time audio synthesis engine and music programming language

    N.B. SuperCollider is now hosted at GitHub, and the most recent versions can be downloaded from there. http://supercollider.github.io A real time audio synthesis engine, and an object-oriented programming language specialised for music. SuperCollider was created in 1996 by James McCartney, now (since version 3) released as free software.
    Downloads: 6 This Week
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  • 13
    ECL development has moved to https://gitlab.com/embeddable-common-lisp/ecl
    Downloads: 6 This Week
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  • 14
    Common Music

    Common Music

    An algorithmic music composition system

    Common Music (CM) is a real-time music composition system implemented in JUCE/C++ and Scheme. It generates musical output via MIDI, OSC, CLM, FOMUS and CSOUND. Its user application is called GRACE (Graphical Real-time Algorithmic Composition Environment)
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    Downloads: 7 This Week
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  • 15
    RHT-LA Profil

    RHT-LA Profil

    RHT-LA : Applicatif Tracé Ligne Aérienne HT

    Ce programme est une aide au dessin pour produire les profils Ligne aérienne Haute Tension à partir des éléments techniques de PLSCADD. Ce programme génère les profils sous AutoCAD pour répondre à la charte graphique spécifique du gestionnaire de réseau : RTE-France.
    Downloads: 27 This Week
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  • 16
    The PGMFI project has as its goal total understanding of the computerized systems such as ECUs, ABS controllers and other devices present in Honda vehicles. Currently, the Non-Commercial-Sharealike license is reccomended for all releases.
    Downloads: 13 This Week
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  • 17
    BeeBase

    BeeBase

    Relational programmable database with GUI

    BeeBase is a relational, programmable database system with graphical user interface for Windows, Mac, Linux and Amiga.
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    Downloads: 19 This Week
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  • 18
    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: 3 This Week
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  • 19
    Lookup is an integrated search interface with electronic dictionaries for the Emacs text editor. You can use various kinds of dictionaries, such as CD-ROM books and online dictionaries, in an efficient and effective manner.
    Downloads: 3 This Week
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  • 20
    The easy setup to give Emacs editors that out-of-box experience!
    Downloads: 8 This Week
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  • 21
    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: 4 This Week
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  • 22
    SISCweb is a framework to facilitate writing stateful Scheme web applications in a J2EE environment. An example WAR file ready for use is provided. Try it today!
    Downloads: 6 This Week
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  • 23
    The goal of the project is to create a Java multi-user game server that can be easily extended and used for adding a multiplayer feature to games. User authentication, chat and interfaces for adding custom capabilities will be provided out of the box.
    Downloads: 6 This Week
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  • 24
    xindy is an index processor that can be used to generate book-like indexes for arbitrary document-preparation systems. This includes systems such as TeX and LaTeX, the roff-family, and SGML/XML-based systems (e.g., HTML).
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    Downloads: 6 This Week
    Last Update:
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  • 25
    MH-E is the Emacs interface to the MH mail system. It offers all the functionality of MH, the visual orientation and simplicity of use of a GUI, and full integration with Emacs, including thorough configuration and online help. Since MH-E 8.6 was released in 2016, its development migrated to the Emacs repository. Thus, if you install an Emacs package, or check out and compile the Emacs source, then you will be running the latest version of MH-E. Consequently, we will retire this site once all of the tickets are resolved. Therefore, please help us out and submit new tickets with M-x report-emacs-bug. MH-E is now only supported in the version of GNU Emacs in which it appears. It is no longer supported in XEmacs. It is compatible with MH versions 6.8.4 and higher, all versions of nmh, and GNU mailutils 1.0 and higher.
    Downloads: 2 This Week
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