This Common Lisp library provides an implementation of in-memory input streams, output streams and io streams for any type of elements.

This is a general Freetype 2 wrapper for Common Lisp using CFFI. It's geared toward both using Freetype directly by providing a simplified API, as well as providing access to the underlying C structures and functions for use with other libraries which may also use Freetype.

The GTWIWTG library (Generators The Way I Want Them Generated -- technically not generators, but iterators) is meant to be small, explorable, and understandable.

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

Common Music (CM) is a real-time music composition system.

This library provides GTK4 bindings for Common Lisp via Gobject Introspection, in the cl-gtk4 ASDF system.

cl-template is a template engine for Common Lisp, taking inspiration from Ruby's ERb module.

This is a Common Lisp library to enable simple message pipelines.

cl-docutils is a Common Lisp implementation of the Docutils text processing system for processing plaintext into presentational formats such as HTML and LaTeX. It is based upon the Python Docutils reference implementation but uses Common Lisp idioms making it easier to extend and more flexible. As with the reference implementation it includes a parser for the reStructured text plaintext markup syntax which is suitable for marking up documentation and for use as user markup for collaborative web sites. It is successfully used to support a higher education peer-review assessment and online tutorial system.

The cl-data-lens library provides a language for expressing data manipulations as the composition of more primitive operations.

This is a small library providing the ISO-639 language code to language name mapping.

Clamp is an attempt to bring the powerful, but verbose, language of Common Lisp up to the terseness of Arc.

There are two parts to Clamp. There is the core of Clamp, which implements the utilities of Arc that are easily converted from Arc to Common Lisp. The other part is the "experimental" part. It contains features of Arc that are not so easy to copy (ssyntax, argument destructuring, etc.).

cl-dotenv is a utility library for loading .env files in Common Lisp.

This library contains an implementation of interfaces and implementations. They're sometimes called protocols in other languages. Broadly speaking, an interface is some collection of function prototypes that a valid implementation must implement.

This package provides a Common Lisp wrapper system for the SDL 2.0 C Library.

This is a library for quaternions. It contains most of the quaternion operations one would usually expect out of such a library and offers them both in non-modifying and modifying versions where applicable. It also tries to be efficient where plausible. Each quaternion is made up of floats, which by default are single-floats, as they do not require value boxing on most modern systems and compilers.

File-Notify is a Common Lisp library for getting notifications for file accesses and changes.

This package is a Python Numpy clone implemented in pure Common Lisp.

This package provides a BNF parser in Common Lisp.

MT19937 is a portable Mersenne Twister pseudo-random number generator for Common Lisp.

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 library is an implementation of the XML Path Language (XPath) Version 1.0.

Trivial-features ensures that *FEATURES* is consistent across multiple Common Lisp implementations.

ZPB-TTF is a TrueType font file parser that provides an interface for reading typographic metrics, glyph outlines, and other information from the file.