Montezuma is a text search engine library for Lisp based on the Ferret library for Ruby, which is itself based on the Lucene library for Java.

This is a Common Lisp library providing a unified way to work with package locks across supported Common Lisp implementations.

A collection of Common Lisp utility functions and macros mostly not found in other utility packages.

This is a Gettext-style internationalisation framework for Common Lisp.

CL-PDF is a cross-platform Common Lisp library for generating PDF files.

UBIQUITOUS is a very easy-to-use library for persistent configuration storage. It automatically takes care of finding a suitable place to save your data, and provides simple functions to access and modify the data within.

ALEXA is a tool similar to lex or flex for generating lexical analyzers. Unlike tools like lex, however, ALEXA defines a domain-specific language within your Lisp program, so you don't need to invoke a separate tool.

This is a small Common Lisp library to make slugs, mainly for URIs, from English and beyond.

On Cliki.net <http://www.cliki.net/Common%20Lisp%20Utilities>, there is a collection of Common Lisp Utilities, things that everybody writes since they're not part of the official standard. There are some very useful things there; the only problems are that they aren't implemented as well as you'd like (some aren't implemented at all) and they aren't conveniently packaged and maintained. It takes quite a bit of work to carefully implement utilities for common use, commented and documented, with error checking placed everywhere some dumb user might make a mistake.

This is a native Common Lisp graphics math library with an emphasis on performance and correctness.

This package provides CFFI bindings and interface to Allegro 5 game developing library for Common Lisp.

This library contains a lexer for syntaxes that use shell-like rules for quoting and commenting. It is a port of the shlex module from Python’s standard library.

This package implements The MD5 Message-Digest Algorithm, as defined in RFC 1321 by R. Rivest, published April 1992.

This is a terminfo database front end in Common Lisp. The package provides a method for determining which capabilities a terminal (e.g. "xterm") has and methods to compile or put commands to a stream.

This package provides a UTF-8 string input stream over a binary stream for Common Lisp.

This package provides an implementation of the which UNIX command in Common Lisp.

with-user-abort is a Common Lisp portability library providing a like-named macro that catches the SIGINT signal.

CL-STRFTIME is a Common Lisp compiler for the strftime “language.”

This library builds on the venerable idea of dynamically memoizing functions. A memoized function remembers results from previous computations and returns cached results when called again with the same arguments rather than repeating the computation.

This a Common Lisp library to convert geographic coordinates between latitude/longitude and Maidenhead locator system.

This package provides Common Lisp math and statistics routines.

Eclector is a portable Common Lisp reader that is highly customizable, can recover from errors and can return concrete syntax trees.

In contrast to many other reader implementations, eclector can recover from most errors in the input supplied to it and continue reading. This capability is realized as a restart.

It can also produce instances of the concrete syntax tree classes provided by the concrete syntax tree library.

This package provides a Common Lisp ASDF system auto-loading extension.

CL-SYNTAX provides Reader Syntax Conventions for Common Lisp and SLIME.