Books
ALU: Lisp Books, ANSI Common Lisp, Best Lisp Books, Common Lisp: A Gentle Introduction to Symbolic Com, Common Lisp: An Interactive Approach, Lisp, 3rd ed., Object-Oriented Common LISP, On Lisp, Paradigms of Artificial Intelligence Programming:, Practical Common Lisp
Compilers and Interpreters
Allegro CL, CLISP, CMU Common Lisp: CMUCL, Common Lisp Hypermedia Server: CL-HTTP, Common Lisp to C Compiler: CLiCC, Corman Technologies, Digitool, Inc., ECo Lisp, GNU Common Lisp (GCL), librep
Emacs Lisp
Internet, Markup Languages Support, Programming Support, TeX, BHL mode for Emacs, Dave Pearson's Emacs Stuff, David Wang, Dictionary, Emacs - The Allrounder, emacs at levana.de, Emacs Code by Stephen Eglen, Emacs Lisp packages by C.Queinnec, EMACS packages, Emacs Stuff
FAQs, Help, and Tutorials
A Brief Guide to CLOS, A Guide to Common LISP, An Introduction and Tutorial for Common Lisp, Common Lisp HyperSpec (TM), Common Lisp the Language, 2nd Edition, DevLibrary - Lisp, Episodic Learner Model - Adaptive Remote Tutor, FAQs: Lisp: AI-related, FAQs: Lisp: USENET, LISP Primer
Lisp Machines
A few things I know about LISP Machines, Al's Xerox Workstation Collection, SLUG Mailing List, Symbolics Lisp Machine Museum, Symbolics Lisp Machine Snapshots, The Lisp Machine: Noble Experiment Or Fabulous Fai, The Symbolics Virtual Lisp Machine, TI S1500 and Explorer Information, Xerox to Symbolics Mouse Conversion
Logo
Implementations, A Turtle for the Teacher, Crystal Objects: Logo Computer Programming Languag, ECAWA's Logo Special Interest Group, Going in Circles, Graphics Gallery, Hello, World Program, JHB web page: logo programming, Learning Logo, Logo and Natural Language, Logo at Waha
Scheme
Books, FAQs, Help, and Tutorials, Implementations, Research, Software, CMU Scheme Repository, Hello, World program, Indiana University's Internet Scheme Reposito, MIT Project MAC (Switzerland) Archive, Online Bibliography of Scheme Research, Reports on the Algorithmic Language Scheme, RRRS-Authors Mailing List Archive, Scheme Meetup Day, Scheme Requests For Implementation, Schemers, Inc.
Software
AllegroServe, cCLan, CL-EMB, CL-GD, cl-glade, CL-INTERPOL, CL-PPCRE, CL-WHO, CL-XML, Cliki
Association of Lisp Users: ALU
Well organized, over 100 pages of information on Lisp: references, books, tutorials, free and commercial implementations, free software, events, conferences, history, organizations, other resources.
CMPnet TechWeb TechEncyclopedia: Lisp
Great resource: over 11,000 definitions.
CMU Artificial Intelligence Repository
Collection of files, programs, publications, of interest to Artificial Intelligence researchers, educators, students, practitioners.
Common Lisp.net
Provide the Common Lisp community with development resources and to work as a starting point for new programmers. CVS, mailinglists, web and FTP space are provided at no charge.
Erann Gat's Papers About Common Lisp
Some papers about Common Lisp, including "Lisp as an alternative to Java", "The Complete Idiot's Guide to Special Variables and Lexical Closures", "The Complete Idiot's Guide to Common Lisp Packages" and "Locales: First-Class Lexical Environments for Common Lisp".
HotDispatch Lisp OfficeFronts
A list of HotDispatch Officefronts representing individuals and companies offering Lisp services and applications.
Lisp: Good News,Bad News, How to Win Big
Lisp has done quite well over the last ten years: becoming nearly standardized, forming the basis of a commercial sector, achieving excellent performance, having good environments, able to deliver applications. Yet the Lisp community has failed to do as well as it could have.
newLISP
General purpose scripting Lisp dialect for FreeBSD, Mac OS X, Cygwin, Linux, Solaris, Win32; close to Scheme but with dynamic scoping; GUI version has IDE with editors and source level debugger, Tcl/Tk frontend. [Open Source, GPL]
P.S., Parenthetically Speaking
Set of articles on several aspects of Lisp and related issues.
Paul Graham
Lisp code, articles (including Beating the Averages), and a big collection of links.
PC AI: LISP Programming Language
Very useful page of links with good helpful annotations for vendors, search engines, more: references (linked and non-linked) for articles, books.
PLisp
A language that takes its overall syntax from Common Lisp and its operators and datatypes from PostScript. The PLisp compiler translates PLisp to PostScript, which can then be run on any PostScript engine.
pLISP
An experimental implementation of reflective functional programming. It is built as a hybrid architecture using a simple Lisp interpreter for driving the compiler and wrapping calls to the Graph-reduction VM.
Screamer Tool Repository
Common Lisp extension, adds support for nondeterministic programming, and on this substrate, provides full constraint programming language to formulate and solve mixed systems of numeric and symbolic constraints. Description, download.
Successful Lisp: How to Understand and Use Common
Excellent online book by David B. Lamkins about beginning to learn Common Lisp.