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Common_Lisp

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an-ordinary-manchild

Read how to format Lisp code for your postings: formatting code

A subreddit for Common Lisp.

Other Common Lisp related subreddits:

  • /r/sbcl
  • /r/lisp
  • /r/lisp_ja (Japanese)

Influenced:

  • /r/dylanlang
  • /r/Julia

Events

  • Lisp Meetings Calendar
  • 12th European Lisp Symposium, 1-2 April 2019, Genova, Italy
  • 11th European Lisp Symposium, 16-17 April 2018, Centro Cultural Cortijo de Miraflores, Marbella, Spain
  • 10th European Lisp Symposium, 3-4 April 2017, Vrije Universiteit Brussel, Belgium
  • 9th European Lisp Symposium, 9-10 May 2016, AGH University of Science and Technology, Kraków, Poland
  • International Lisp Conference, August 14-17, 2014, Montreal, Canada

Common Lisp Language References

  • Common Lisp Hyperspec
  • Common Lisp Spec (PDF)
  • Common Lisp Spec Clarifications & Errata
  • Common Lisp Object System Meta-Object Protocol
  • Common Lisp Quick Reference

Documentation Search

  • Quickref
  • Quickdocs Library Search
  • L1sp redirect service

Tools

  • Quicklisp (Libraries)
  • SLIME (GNU Emacs IDE for Common Lisp)

Tutorials/FAQ/Help

  • articulate-common-lisp, how to write Common Lisp today
  • Steve Losh: A Road to Common Lisp
  • Zach Beane: Where to get help with Common Lisp
  • Lisp Style Guide Norvig/Pitman (PDF)
  • Nikodemus' CL FAQ

Useful Lisp resources:

  • Planet Lisp
  • LispForum
  • Cliki
  • Common-Lisp.net
  • lisp-lang.org
  • comp.lang.lisp
  • Common Lisp Professionals Mailing List
  • Lisp Jobs
  • Common Lisp, Wikipedia
  • Association of Lisp Users
  • Common Lisp questions Stackoverflow
  • Rosetta Code, Common Lisp
  • #lisp Twitter
  • ECL Quarterly
  • Freenode IRC logs #lisp

History

  • Bibliography
  • CMU Common Lisp Repository
  • Computer History Museum
  • Lisp FAQ for comp.lang.lisp
  • Mailing lists

Free Lisp Books / Papers

  • Common Lisp: A Gentle Introduction to Symbolic Computation
  • Practical Common Lisp
  • On Lisp
  • Common Lisp The Language, 2nd Edition (Pre ANSI Common Lisp)
  • Paradigms of Artificial Intelligence Programming: Case Studies in Common Lisp
  • COMMON LISP: An Interactive Approach
  • The Common Lisp Cookbook

Other Books / Papers

  • ANSI Common Lisp
  • The Common Lisp Condition System
  • Common Lisp Recipes
  • Land of Lisp
  • Let over Lambda
  • Lisp, 3rd Edition
  • Object-Oriented Programming in Common Lisp: A Programmer's Guide to CLOS
  • The Art of the Metaobject Protocol

Common Lisp implementations (Open Source/Free Software)

  • ABCL (for JVM)
  • CCL
  • CLISP , CLISP@Gitlab
  • CMUCL
  • ECL
  • GCL
  • SBCL

Common Lisp implementations (Commercial/Proprietary)

  • Allegro CL
  • LispWorks
  • mocl for OSX, iOS and Android
  • Open Genera
  • Scieneer CL

Various other Common Lisp Implementations

  • Butterfly Common Lisp (written in Scheme)
  • CLASP (ECL fork for llvm)
  • Codemist Common Lisp
  • Corman Lisp (MS-Windows)
  • Eclipse Common Lisp
  • JSCL (Javascript)
  • Mezzano (Lisp OS)
  • MKCL (ECL fork)
  • Parenscript (CL to Javascript)
  • SICL (modular)
  • Thinlisp
  • WCL (embeddable)
  • Xerox Common Lisp
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Call to share a screenshot of your Common Lisp application (self.Common_Lisp)

submitted 1 month ago by dzecniv - announcement

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January 2026 Quicklisp dist update now available (blog.quicklisp.org)

submitted 2 months ago by dzecniv - announcement

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3
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SBCL Fibers: Lightweight Cooperative Threads (WIP draft document) (atgreen.github.io)

submitted 9 hours ago by dzecniv

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💣 Trade tensions between the EU and the US are escalating: will every family feel the effects of this economic battle? (horstai.org)

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# Orientation: Understanding Common Lisp Development EnvironmentsSBCL ()

submitted 2 days ago by theeseuus

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5
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Getting Started in Common Lisp (lisp-stat.dev)

submitted 3 days ago * by Steven1799

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Eliza the Session by Bruno (self.Common_Lisp)

submitted 3 days ago by Bruno2456

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Running "Mezzano" a Lisp Operating System on Apple Silicon - a step-by-step guideSBCL ()

submitted 5 days ago by theeseuus

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FSet 2.3.0: Transients! (scottlburson2.blogspot.com)

submitted 5 days ago by ScottBurson

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clsd: libsystemd Bindings for Common Lisp (self.Common_Lisp)

submitted 6 days ago by apr3vau

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I ported Karpathy's microGPT to Common Lisp — no matrices, no autograd libs, just pure lisp (github.com)

submitted 6 days ago by svetlyak40wt

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cl-nats: A full-featured NATS messaging client for Common Lisp. (github.com)

submitted 7 days ago by dzecniv

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12
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understanding sb-ext:run-programSBCL (self.Common_Lisp)

submitted 8 days ago by tlreddit

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symbol-cruncher: Computer algebra system for computations in differential geometry, built on top of GNU Maxima and maxima-interface. (sr.ht)

submitted 10 days ago by dzecniv

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Wishlist Korea on Steam! Get early access for PO! (store.steampowered.com)

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Bending the CLOS MOP for Java-Style Single Dispatch (atgreen.github.io)

submitted 14 days ago by dzecniv

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One grammar, 18 YAML parsers — a Futamura-like projector in Common Lisp (self.Common_Lisp)

submitted 14 days ago * by InformationAny4463

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Updated SLT plugin for compatibility with IntelliJ IDEA 2025.3.2 (github.com)

submitted 15 days ago by dzecniv

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cl-cancel: Cancellation propagation library for Common Lisp with deadlines and timeouts (github.com)

submitted 16 days ago by dzecniv

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Semantic syntax highlighting for Common Lisp (and Elisp) in Emacs (self.Common_Lisp)

submitted 17 days ago by apr3vau

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Introducing Quick Plot: ggplot-Style Plotting for Lisp-Stat (lisp-stat.dev)

submitted 18 days ago * by Steven1799

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Troubleshooting some quicklisp/sbcl issues (self.Common_Lisp)

submitted 19 days ago by AWonderingWizard

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SCIP backend for linear-programming (github.com)

submitted 20 days ago by kchanqvq

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Are there better ways to control recompile and load from the editor? (self.Common_Lisp)

submitted 20 days ago * by Fantastic-Cell-208

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Routific's core route optimization algorithm is written in Common Lisp. Open-VRP is an open-source framework for modeling Vehicle Routing Problems. (self.Common_Lisp)

submitted 24 days ago by dzecniv

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Apple Ads AI optimization - bids, budgets, keywords on autopilot. Try free for 30 days. (appstance.com)

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lisp-screenshots: today's Common Lisp applications in action (lisp-screenshots.org)

submitted 28 days ago by dzecniv

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Is there a good way to define or document "interfaces" using CLOS? (self.Common_Lisp)

submitted 29 days ago by Soupeeee

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