ADOPT is a simple UNIX-style option parser in Common Lisp, heavily influenced by Python's optparse and argparse.

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

This package provides a priority queue implemented with an array-based heap.

BOOST-LEXER is a tokenizer for Common Lisp that makes heavy use of BOOST-RE.

This package defines a simple extensible protocol for computing a guess using advisors.

This library implements the base58 encoding algorithm. It's basically base64 but with a smaller alphabet (58, as in the name) that doesn't include similar looking characters, among other things. See https://github.com/bitcoin/bitcoin/blob/master/src/base58.h for a full reference.

Portability library for IEEE float features that are not covered by the Common Lisp standard.

This is a library to allow easy handling of external processes, and primarily to get their output. It handles proper copying of the standard and error outputs of the process simultaneously, both in a sequential and parallel fashion. It also features a lazy directory switching mechanism, to avoid running into parallelism problems when having to change directory.

This package provides an enhanced version of typep that is exactly like the one in the Lisp spec, except it can also accept a single type argument, in which case it returns the appropriate closure.

This library validates superclasses according to a simple substitution model, thereby greatly simplifying the definition of class mixins.

cl-charms is an interface to libcurses in Common Lisp. It provides both a raw, low-level interface to libcurses via CFFI, and a more higher-level lispier interface.

Croatoan provides high-level Common Lisp CLOS bindings for the ncurses terminal library.

This library is a collection of pseudo random number generators.

While Common Lisp does provide a RANDOM function, it does not allow the user to pass an explicit SEED, nor to portably exchange the random state between implementations. This can be a headache in cases like games, where a controlled seeding process can be very useful.

For both curiosity and convenience, this library offers multiple algorithms to generate random numbers, as well as a bunch of generally useful methods to produce desired ranges.

This package provides a SDL2 based vector graphic library for Common Lisp.

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

The cl-sqlite package is an interface to the SQLite embedded relational database engine.

This is a library for access to atomic operation primitives such as compare-and-swap. It aims to be a rather thin layer over what the implementations offer.

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

Dynamic-Classes helps to ease the prototyping process by bringing dynamism to class definition.

System-Load is a Common Lisp library for accessing the system's CPU and memory usage.

This package provides an implementation of the flexichain protocol, allowing client code to dynamically add elements to, and delete elements from a sequence (or chain) of such elements.

HELambdap is a Common Lisp documentation system which strives to be simple to use, yet easily customizable.

This package provides Common Lisp bindings to GSSAPI, which is designed to provide a standard API to authentication services. The API itself is generic, and the system can provide different underlying implementations. The most common one is Kerberos, which has several implementations, the most common of which is probably Active Directory.

Binary-types is a Common Lisp package for reading and writing binary files. Binary-types provides macros that are used to declare the mapping between Lisp objects and some binary (i.e. octet-based) representation.