EXTERNAL-PROGRAM enables running programs outside the Lisp process. It is an attempt to make the RUN-PROGRAM functionality in implementations like SBCL and CCL as portable as possible without sacrificing much in the way of power.

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

This is a client library to interact with the "mod.io" (https://mod.io) platform to manage "mods" or extensions for games and other applications. It covers the full v1 API and includes convenience methods to make interacting with the API as well as syncing mods and so on easy.

This package provides a Common Lisp system which wraps the BORDEAUX-THREADS system to be able to run things in the main thread of the implementation, for example drawing calls of GUI applications.

This is an implementation of a Markdown parser in Common Lisp.

Opticl is a Common Lisp library for representing, processing, loading, and saving 2-dimensional pixel-based images.

Cl-reexport makes a package reexport symbols which are external symbols in other Common Lisp packages. This functionality is intended to be used with (virtual) hierarchical packages.

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

cl-random is a library for generating random draws from various commonly used distributions, and for calculating statistical functions, such as density, distribution and quantiles for these distributions.

This Common Lisp package offers functions for parsing and formatting decimal numbers. The package's main interface are the functions parse-decimal-number and format-decimal-number. The former is for parsing strings for decimal numbers and the latter for pretty-printing them as strings.

THE-COST-OF-NOTHING is a library for measuring the run time of Common Lisp code. It provides macros and functions for accurate benchmarking and lightweight monitoring. Furthermore, it provides predefined benchmarks to determine the cost of certain actions on a given platform and implementation.

Coleslaw is a static site generator written in Common Lisp.

40ants-asdf-system provides a class for being used instead of asdf:package-inferred-system in 40ANT systems.

Flexi-streams is an implementation of "virtual" bivalent streams that can be layered atop real binary or bivalent streams and that can be used to read and write character data in various single- or multi-octet encodings which can be changed on the fly. It also supplies in-memory binary streams which are similar to string streams.

The py-configparser package implements the ConfigParser Python module functionality in Common Lisp. In short, it implements reading and writing of .INI-file style configuration files with sections containing key/value pairs of configuration options. In line with the functionalities in the python module, does this package implement basic interpolation of option values in other options.

This library allows creation of hash tables with arbitrary test/hash functions, in addition to the test functions allowed by the standard (EQ, EQL, EQUAL and EQUALP), even in implementations that don't support this functionality directly.

A miniature toolkit that contains some useful shifting/popping/pushing functions for arrays and vectors. Originally from Plump.

This package provides a shim between Python3 (specifically, the CPython implementation of Python) and Common Lisp.

Scrape on-line documentation out of a running Lisp image.

40ants-doc provides a rudimentary explorable programming environment. The narrative primarily lives in so-called sections that mix Markdown docstrings with references to functions, variables, etc., all of which should probably have their own docstrings.

The primary focus is on making code easily explorable by using SLIME's M-. (slime-edit-definition). Generating documentation in Markdown or HTML format from sections and all the referenced items is also implemented.

With the simplistic tools provided, one may obtain results similar to literate programming, but documentation is generated from code, not the other way around, and there is no support for chunking. Code comes first, code must look pretty, documentation is code.

40ants-doc is a fork of MGL-PAX with fewer dependencies (only named-readtables and pythonic-string-reader) for the core system, and additional features in the full system.

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

This package provides a Common Lisp Twitter client featuring full API coverage.

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 library provides a uniform API, as specified in Common Lisp the Language 2, for accessing information about variable and function bindings from implementation-defined lexical environment objects. All major Common Lisp implementations are supported, even those which don't support the CLTL2 environment access API.