This package provides a safer variant of READ secure against internbombing, excessive input and macro characters.

Alexandria is a collection of portable utilities. It does not contain conceptual extensions to Common Lisp. It is conservative in scope, and portable between implementations.

CL-HEAP provides various implementations of heap data structures (a binary heap and a Fibonacci heap) as well as an efficient priority queue.

This is a coroutine library for Common Lisp implemented using the continuations of the cl-cont library.

Eazy-Gnuplot is a Common Lisp interface to gnuplot which eschews CFFI, CLOS and structures. It communicates with gnuplot via *standard-output*, and users can plot data by printing to that stream.

This library is a fork of SSL-CMUCL. The original SSL-CMUCL source code was written by Eric Marsden and includes contributions by Jochen Schmidt. Development into CL+SSL was done by David Lichteblau.

cl-cron is a simple tool that provides cron like facilities directly inside of Common Lisp.

This library builds on the venerable idea of dynamically memoizing functions. A memoized function remembers results from previous computations and returns cached results when called again with the same arguments rather than repeating the computation.

This Common Lisp library contains various handy utilities to help autowrapping with claw.

The Type-Templates library allows you to define types and “template functions” that can be expanded into various type-specialized versions to eliminate runtime dispatch overhead. It was specifically designed to implement low-level numerical data types and functionality.

Clop is a Common Lisp library for parsing strings in the TOML configuration file format.

This library provides two strata to access the POSIX shm API:

• the package posix-shm/ffi, a collection of slim bindings to the POSIX API

• the package posix-shm, a lispy wrapper around the FFI that integrates more closely to the features of Common Lisp, and provides a handful of utilities and macros

Features include:

• open, close, create, resize, change ownership of, change permissions of, and memory map to shared memory objects

• open-shm appears more like open from the standard library

• open-shm*, for creating anonymous shm objects

• with-open-shm, with-mmap and similar with- macros for safely accessing resources with dynamic extent

Screamer is an extension of Common Lisp that adds support for nondeterministic programming. Screamer consists of two levels. The basic nondeterministic level adds support for backtracking and undoable side effects. On top of this nondeterministic substrate, Screamer provides a comprehensive constraint programming language in which one can formulate and solve mixed systems of numeric and symbolic constraints. Together, these two levels augment Common Lisp with practically all of the functionality of both Prolog and constraint logic programming languages such as CHiP and CLP(R). Furthermore, Screamer is fully integrated with Common Lisp. Screamer programs can coexist and interoperate with other extensions to as CLIM and Iterate.

Just wrap your Common Lisp function in this macro call and it will be optimized for tail recursion. You will be warned if the function is not tail recursive.

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

This package provides a hierarchy of major functions and auxiliary functions related to the structured analysis and processing of open text.

RESTAS is a Common Lisp web application framework.

carp is a Lisp-like programming language that compiles to C. It features inferred static typing, macros, automatic memory management without a garbage collector, a REPL, and straightforward integration with code written in C.

Roswell started out as a command-line tool with the aim to make installing and managing Common Lisp implementations really simple and easy. Roswell has now evolved into a full-stack environment for Common Lisp development, and has many features that makes it easy to test, share, and distribute your Lisp applications.

Roswell is still in beta. Despite this, the basic interfaces are stable and not likely to change.

GCL is an implementation of the Common Lisp language. It features the ability to compile to native object code and to load native object code modules directly into its lisp core. It also features a stratified garbage collection strategy, a source-level debugger and a built-in interface to the Tk widget system.

s7 is a Scheme interpreter intended as an extension language for other applications. It exists as just two files, s7.c and s7.h, that may be copied into the source tree of another application. There are no libraries, no run-time init files, and no configuration scripts. It can also be built as a stand-alone REPL interpreter.

Lush is an object-oriented Lisp interpreter/compiler with features designed to please people who want to prototype large numerical applications. Lush includes an extensive library of vector/matrix/tensor manipulation, numerous numerical libraries (including GSL, LAPACK, and BLAS), a set of graphic functions, a simple GUI toolkit, and interfaces to various graphic and multimedia libraries such as OpenGL, SDL, Video4Linux, and ALSA (video/audio grabbing), and others. Lush is an ideal frontend script language for programming projects written in C or other languages. Lush also has libraries for Machine Learning, Neural Nets and statistical estimation.

Clasp is a new Common Lisp implementation that seamlessly interoperates with C++ libraries and programs using LLVM for compilation to native code. This allows Clasp to take advantage of a vast array of preexisting libraries and programs, such as out of the scientific computing ecosystem. Embedding them in a Common Lisp environment allows you to make use of rapid prototyping, incremental development, and other capabilities that make it a powerful language.

ASDF is what Common Lisp hackers use to build and load software. It is the successor of the Lisp DEFSYSTEM of yore. ASDF stands for Another System Definition Facility.