deeds allows for efficient event delivery to multiple handlers with a complex event filtering system.

Eager Future2 is a Common Lisp library that provides composable concurrency primitives that unify parallel and lazy evaluation, are integrated with the Common Lisp condition system, and have automatic resource management.

Alloy is a user interface toolkit. It is defined through a set of protocols that allow for a clear interface, as well as a standardised way to integrate Alloy into a target backend.

This package provides audio input and output functions to Common Lisp using bindings to the portaudio library.

This package provides a Common Lisp implementation of Base64 encoding and decoding. Base64 encoding is a technique to encode binary data in a portable, safe printable, 7-bit ASCII format.

This package provides a stream based JSON parser/writer, well suited as building block for higher level libraries.

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

This is a library for representing and mapping colours between their various spaces.

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

CL-Ledger is a Common Lisp port of the Ledger double-entry accounting system.

Circular-Streams allows you to read streams circularly by wrapping real streams. Once you reach end-of-file of a stream, its file position will be reset to 0 and you're able to read it again.

CLSS is a DOM traversal engine based on CSS selectors. It makes use of the Plump-DOM and is used by lQuery.

This package provides a configuration library that adds the ability for Lem to manage packages within the user configuration directory.

cl-gserver is a 'message passing' library / framework with actors similar to Erlang or Akka. It supports creating reactive systems for parallel computing and event based message handling.

This package provides an extensible implementation of defclass that can accurately control the expansion according to the metaclass and automatically detect the suitable metaclass by analyzing the defclass form.

The purpose of this library is to provide a collection of implementations of trees.

In contrast to existing libraries such as cl-containers, it does not impose a particular use for the trees. Instead, it aims for a stratified design, allowing client code to choose between different levels of abstraction.

As a consequence of this policy, low-level interfaces are provided where the concrete representation is exposed, but also high level interfaces where the trees can be used as search trees or as trees that represent sequences of objects.

Chemboy is a Common Lisp program for doing basic chemistry calculations. This package provides the text-based interface for Chemboy.

Markup allows the use of HTML syntax with in Common Lisp code. This has the advantage of being able to copy HTML snippets and have them instantly be functional, less double quotes than a s-expression approach, and designers will be able to understand the embedded HTML.

This library allows you to define custom indentation hints for your macros if the one recognised by SLIME automatically produces unwanted results.

Common Lisp port of Clojure's instaparse parser library - GLL parsing with EBNF/ABNF support.

This is a simple Common Lisp library to evaluate some forms in parallel.

cl-mysql is a Common Lisp implementation of a MySQL wrapper.

Trivial-Benchmark runs a block of code many times and outputs some statistical data for it. On SBCL this includes the data from time, for all other implementations just the real-time and run-time data. However, you can extend the system by adding your own metrics to it, or even by adding additional statistical computeations.

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