On Lispis the best Lisp book I've read, but it's not for beginners.
Structure and Interpretation of Computer Programs (SICP): absolutely the best and most complete introductory computer science textbook available. This is used in MIT's 6.001, the intro. computer science course that I took as an undergraduate and taught three times as a teaching assistant, twice as head TA. It is an incredible, comprehensive course.
Common Lisp Directory: ...a resource for Common Lisp users who are invited to post mostly Lisp related links into the LinkIt section and use/comment the Directory and Knowledge Base in the Directory section
Scieneer Common Lispfeatures support for Symmetrical Multi-Processor (SMP) systems on various Unix based platforms
ThinLisp, a practical dialect of lisp for real world applications. You develop in Common Lisp, you deploy in C. ThinLisp programs are as fast as C, by design. Used for a decade in million line systems.
Fresco: a windowing system derived from a powerful structured graphics toolkit originally based on InterViews
Frink: a practical calculating tool and programming language designed to help us all to better understand the world around us, to help us get calculations right without getting bogged down in the mechanics, and to make a tool that's really useful in the real world. It tracks units of measure (feet, meters, kilograms, watts, etc.) through all calculations, allowing you to make physical calculations easily, mix units of measure transparently, and ensure that the answers come out right.
Ira Goldklang's TRS-80 Revived Site: devoted to providing a second life to the Tandy Radio Shack Model 1, Model 3, and Model 4..., on which I first learned to program
Aspect/J, a seamless aspect-oriented extension to the Java™ programming language that enables the clean modularization of crosscutting concerns such as: error checking and handling, synchronization, context-sensitive behavior, performance optimizations, monitoring and logging, debugging support, multi-object protocols
Jetty, an Open Source HTTP Servlet Server written in 100% Java. It is both a full featured HTTP/1.1 server and a servlet container. It is designed to be full featured, light weight, high performance, embeddable, extensible and flexible, thus making it an ideal platform for serving dynamic HTTP requests from or for any Java application.
Jini: an open software architecture that enables developers to create network-centric services that are highly adaptive to change
NetBeans: the project that develops NetBeans IDE, the full-featured integrated environment for Java Developers and NetBeans Platform, the widely adopted infrastructure backplane for complex desktop applications
PicoContainer: a small, simple container for arbitrary components
NewLisp: a general purpose scripting language for developing Web applications and programs in general and in the domain of Artificial Intelligence (AI) and statistics
Nice: a new object-oriented programming language based on Java
Planet PDF: a comprehensive, popular and independent Web site exclusively focused on Adobe Acrobat/PDF users and uses
PriorArt.org: The mission of PriorArt.org is to give inventors an easy and free way to disclose and publish inventions that they think should be in the public domain.
Processing: a system for producing interactive web pages a la Flash
R6RS.org: R6RS, the controversial Scheme standard from 2007
ReadScheme, an excellent bibliography of Scheme papers, etc.
Schematics Scheme Cookbook: a collaborative effort to produce practical documentation for using the Scheme language, particularly in commercial environments
Scheme Punks: Home of the New Alternate Scheme Standard
Schematics, devoted to the construction of high quality libraries for the Scheme language, and PLT Scheme in particular, including a unit testing system and a Wiki
Impromptu: OSX programming environment for composers, sound artists, VJ's and graphic artists with an interest in live or interactive programming. Impromptu is a Scheme language environment, a member of the Lisp family of languages.
Storage: a project to replace the traditional filesystem with a new document store
Subterfugue: a framework for observing and playing with the reality of software; it's a foundation for building tools to do tracing, sandboxing, and many other things
Supper Happy Dev House: the Bay Area's premier monthly hackathon event that combines serious and not-so-serious productivity with a fun and exciting party atmosphere
Wafer: a research project which compares the many open source web application frameworks which are available using a common example application
Wotsit.org: the programmer's file and data format resource. This site contains information on hundreds of different file types, data types, hardware interface details and all sorts of other useful programming information; algorithms, source code, specifications, etc.
XWT: XML Windowing Toolkit... lets you write remote applications -- applications that run on a server, yet can project their user interface onto any computer, anywhere on the Internet
YAML: YAML Ain't Markup Language specification, Version 1.1