This library strives to provide a portable TCP/IP and UDP/IP socket interface for as many Common Lisp implementations as possible, while keeping the abstraction and portability layer as thin as possible.

This Common Lisp library contains the core classes and pixel access macros for the Opticl image processing library.

This prompter library is heavily inspired by Emacs' minibuffer and Helm (https://emacs-helm.github.io/helm/). It only deals with the backend side of things, it does not handle any display. Features include asynchronous suggestion computation, multiple sources, actions and resumable prompters.

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

bubble-operator-upwards is a function that bubbles an operator upwards in a form, demultiplexing all alternative branches by way of cartesian product.

This Common Lisp library provides string encoding and decoding routines for IDNA, the International Domain Names in Applications.

This package provides a canonical stand-in for NIL for contexts where NIL means no value.

A JSON Object Signing and Encryption (JOSE) implementation for Common Lisp.

This package is a simple date and time library.

CL-MOUNT-INFO is a Common Lisp wrapper around getmntent(3) and related C functions to get information about the mounted file system.

This package implements an algorithm for the spelling of enharmonics and dealing with ties and dots in rhythm notation.

one-more-re-nightmare is a regular expression engine that uses the technique presented in Regular-expression derivatives re-examined (Owens, Reppy and Turon, 2009; doi:10.1017/S0956796808007090) to interpret and compile regular expressions.

This system is an implementation of the Common Lisp type system; particularly cl:typep and cl:subtypep.

This package provides a robust CSV parser and printer that tries to follow the fine print of de facto standards. It can be configured to choose which standard exactly.

Named readtables is a library that creates a namespace for named readtables, which is akin to package namespacing in Common Lisp.

This an implementation of CDR 2: generic hash tables for Common Lisp

This is a backend for the linear-programming Common Lisp library using the GNU Linear Programming Kit (GLPK) library.

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.

Simple and fast marshalling of Lisp datastructures. Convert any object into a string representation, put it on a stream an revive it from there. Only minimal changes required to make your CLOS objects serializable.

This is a utility kit for cl-sdl2 that provides something similar to GLUT. However, it's also geared at being useful for "real" applications or games.

This package exports the following function to parse floating-point values from a string in Common Lisp.

This Common Lisp library provides optimized byte-swapping primitives. The library can change endianness of unsigned integers of length 1/2/4/8. Very useful in implementing various network protocols and file formats.

ST-JSON (ST because it originated at Streamtech) is a Common Lisp library for encoding and decoding JSON values (as specified on json.org).

This library does mostly the same thing as CL-JSON, but is simpler and more precise about types (distinguishing boolean false, the empty array, and the empty object).

This is a simple queue library for Common Lisp with features such as non-consing thread safe queues and fibonacci priority queues.