cl-strings is a small, portable, dependency-free set of utilities that make it even easier to manipulate text in Common Lisp. It has 100% test coverage and works at least on sbcl, ecl, ccl, abcl and clisp.

CLX is an X11 client library for Common Lisp. The code was originally taken from a CMUCL distribution, was modified somewhat in order to make it compile and run under SBCL, then a selection of patches were added from other CLXes around the net.

This package provides highly optimized base64 encoding and decoding. Besides conversion to and from strings, integer conversions are supported. Encoding with Uniform Resource Identifiers is supported by using a modified encoding table that uses only URI-compatible characters.

This library allows you to implement and enforce proper finalization of compile-time constructs while building Lisp source files.

It produces two systems: asdf-finalizers and list-of.

Babel is a charset encoding and decoding library, not unlike GNU libiconv, but completely written in Common Lisp.

CL-DATA-STRUCTURES is a Common Lisp library providing a portable collection of mutable and immutable data structures (dictionaries, sets, queues, sequences) and algorithms.

DAEMON provides the functionality of daemonizing Common Lisp processes on UNIX like platforms.

Hypergeometrica is a Common Lisp library for performing high-precision arithmetic, with a focus on performance. At the heart of it all are routines for multiplication. Hypergeometrica aims to support:

• In-core multiplication using various algorithms, from schoolbook to floating-point FFTs.

• In-core multiplication for large numbers using exact convolutions via number-theoretic transforms, which is enabled by 64-bit modular arithmetic.

• Out-of-core multiplication using derivatives of the original Cooley–Tukey algorithm.

On top of multiplication, one can build checkpointed algorithms for computing various classical constants, like \pi.

Pileup is a portable, performant, and thread-safe binary heap for Common Lisp.

This is a very simple implementation of SHA1 and HMAC-SHA1 for Common Lisp. The code is intended to be easy to follow and is therefore a little slower than it could be.

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

Simple library to create temporary directories.

doplus is an iteration macro for Common Lisp.

YASON is a Common Lisp library for encoding and decoding data in the JSON interchange format.

This library is a collection of utilities for writing compiler macros. It is intended to make it possible to make compiler macros much more useful, by granting them access to lexical type information, making the protocol for declining expansion more convenient, and establishing some information for signaling optimization advice to programmers. Some utilities to support this, especially for reasoning on types, are also included.

TRIVIAL-OCTET-STREAMS is a Common Lisp library implementing in-memory octet streams analogous to string streams.

Authentic provides a light-weight and extendible solution to user/password management for Common Lisp applications. It has features such as safe password storage in a database, password reset, user confirmation tokens, and user authentication.

cl-tar is a Common Lisp library providing a high-level interface for interacting with tar archives.

From a string input and a list of candidates, return the most relevant candidates first.

Skippy is a Common Lisp library to read and write GIF image files.

Splits sequence into a list of subsequences delimited by objects satisfying the test.

This is a Common Lisp autowrapping facility for quickly creating clean and lean bindings to C libraries.

This package implements binary trees of various kinds, presenting a uniform interface to them all.

This package provides a canonical way of converting class designators to classes.